Blog Archive

2023 (3)

02. February Common questions about silicon in nutrient solutions
13. January Connecting a low cost TDR moisture content/EC/temp sensor to a NodeMCUv3
05. January How to prepare your own hypochlorous acid cleaner using bleach

2022 (7)

26. August A cost analysis of fertilizers for hydroponic/soilless growing in 2022
25. August How to reuse your coco coir in soilless growing
24. August Are Iron chelates of humic/fulvic acids better or worse than synthetics?
23. August A guide to different pH up options in hydroponics
08. July How to make a stabilized ortho-silicic acid solution with only 3 inputs
21. June A one-part hydroponic nutrient formulation for very hard water
13. May New tissue analysis feature in HydroBuddy v1.99

2021 (54)

08. June The Potassium to Calcium ratio in hydroponics
29. April How to use organic fertilizers in Kratky hydroponics
28. April The importance of accuracy in hydroponic nutrient preparation
27. April My Kratky tomato project, tracking a Kratky setup from start to finish
26. April Kinetin, a powerful hormone for flowering plants
23. April Arduino hydroponics, how to build a sensor station with an online dashboard
21. April How to choose the best hydroponic bucket system for you
20. April Arduino hydroponics, how to go from simple to complex
19. April A great trick to higher chelate stability in hydroponics
16. April Hydroponics vs soil, all you wanted to know
15. April The best hydroponic medium you have never heard of
14. April How to make an organic hydroponic nutrient solution
12. April How to get more phosphorus in organic hydroponics
10. April Why NFT is the best hydroponic system beginners should avoid
08. April Organic nitrogen in hydroponics, the proven way
07. April Aquaponics vs hydroponics, which is best and why?
06. April A powerful organic fungicide for powdery mildew
05. April Making a nitrate rich compost tea for organic hydroponics
03. April The ultimate EC to ppm chart and calculator
02. April Never fail with ebb and flow hydroponic systems
01. April The value of Fulvic Acid in hydroponics
31. March New to organic hydroponics? Consider these six things
30. March Is hydroponics organic? Is it better or worse?
27. March HydroBuddy v1.9, MacOS binary, new EC model, many bug fixes and more!
26. March Improving on HydroBuddy’s theoretical conductivity model, the LMCv2
25. March Creating a pH/EC wireless sensing station for MyCodo using an Arduino MKR Wifi 1010
24. March A simple cheatsheet for macro nutrient additions in hydroponics
23. March How to make your own stabilized mono-silicic acid for use in hydroponics
22. March HydroBuddy coming to Android, free and open source!
19. March Calibrating a capacitive moisture/water content sensor for hydroponics
18. March Properly positioning temperature and humidity sensors in a hydroponic growing environment
15. March Making the most out of your hydroponic setup’s logged sensor and control data
12. March Commercial sensor and data logging solutions for hydroponics
11. March MyCodo: an open-source solution for control, data logging and visualization
10. March Pros and cons of building your own sensor and data logging system in hydroponics
09. March Standard hydroponic formulations from the scientific literature
02. March The stability of metal chelates
01. March Six things to look for in a Hydroponic sensor data logging system
25. February Differences between labels and actual composition values in commercial hydroponic fertilizers
24. February Nutrient availability and pH: Are those charts really accurate?
24. February Understanding Calcium deficiency issues in plants
22. February Disinfection of nutrient solutions in recirculating hydroponic systems
19. February Optimal air speed in a hydroponic crop
18. February Advanced phosphorous fertilizers: Are polyphosphates worth it?
17. February Keeping plants short: Natural gibberellin inhibitors
16. February Five common mistakes people make when formulating hydroponic nutrients
12. February Using VH400 sensors to build an automated irrigation setup
11. February Practical aspects of carbon dioxide enrichment in hydroponics
10. February The cricket IoT board: A great way to create simple low-power remote sensing stations for hydroponics
10. February Can you grow large flowering plants like tomatoes using the Kratky method? (passive hydroponics)
09. February Timing irrigations with moisture sensors in hydroponics
08. February Tensiometers (irrometers) the best way to time irrigations in hydroponics
04. February The Chirp Sensor: A plug-and-play solution to moisture monitoring in hydroponics
01. February How to identify resistive moisture sensors and why to never use them in hydroponics

2020 (60)

07. December Five tips to succeed when doing Kratky hydroponics
29. November Practical use of ion selective electrodes in hydroponics
28. November Inner leaf tipburn in hydroponic lettuce
22. November The effect of Seaweed/Kelp extracts in plants
08. November Characterizing hydroponic stock nutrient solutions
01. November Why are different hydroponic formulations required for different situations?
01. November How tap water affects your hydroponic nutrient formulation
25. October How much Phosphorous are you adding to your solution to adjust pH?
25. October How to deal with nutrient solution waste in hydroponics
11. October Factors limiting the life of a recirculating hydroponic nutrient solution
10. October Preparing your own low cost A+B generic hydroponic nutrients at a small scale from raw salts
03. October How to correctly prepare dilutions from concentrated solutions in hydroponics
03. October The cost of reproducing the label of a commercial hydroponic fertilizer with raw salts at a small scale
27. September Starting a youtube channel to teach chemistry related hydroponic skills
22. September Hardware for building a wifi-connected DIY monitoring/control system for a hydroponic crop
19. September Nutrient problems and foliar sprays
12. September Five things to consider when trying to copy commercial hydroponic nutrients
07. September Five things you can learn from leaf tissue analysis
07. September What is the ideal amount of media per plant in hydroponics?
04. September Why most of the time a “deficiency” in hydroponics is not solved by just “adding more of it”
04. September Getting all the data to evaluate a problem in a hydroponic crop
23. August Building a DIY control infrastructure for a hydroponic crop: Part one
18. August Five common misconceptions around nutrient management in hydroponics
16. August Five tips to successfully manage your nutrient solution in a recirculating hydroponic setup
09. August About the default fertilizer database in HydroBuddy
29. July A new conductivity model in HydroBuddy
26. July Building a model to predict EC in hydroponic nutrient solutions
11. July Keeping plants short: Using day/night temperature differences (DIF)
11. July Monitoring the quality of fertilizer stock solutions
04. July Why red and blue LED grow lights never took off
04. July In-depth books to learn about hydroponics at an advanced level
28. June Six things you need to know before using plant hormones
28. June Keeping plants short: Synthetic gibberellin inhibitors
28. June Keeping plants short: Why is it important?
19. June Using calcium sulfate in hydroponics
13. June Average yields per acre of hydroponic crops
13. June Three ways to judge the quality of powdered hydroponic nutrient products
06. June How to control algae in a hydroponic crop
06. June Can you use regular soil fertilizers in hydroponics?
05. June Accurately preparing large quantities of concentrated hydroponic nutrients
31. May Plant Growth Promoting Rhizobacteria (PGPR) in hydroponics
25. May Why do NPK labels express P and K as oxides?
24. May HydroBuddy has now been updated to v1.70: New features and modifications
19. May Calcium EDTA and its problems in hydroponics
17. May How to prepare a low cost chelated micronutrient solution
11. May How to prepare pH 4 and 7 buffers from scratch without using a pH meter
10. May Why TDS is NOT equal to Total Dissolved Solids in hydroponics
09. May Understanding the carbonic acid/bicarbonate buffer in hydroponics
05. May Hydroponics nutrients and microgreens
03. May Is my water source good for hydroponics?
02. May A guide to different pH down options in hydroponics
26. April Microgreen production at home: Getting the materials
25. April Nutrient solution conductivity estimates in Hydrobuddy
19. April Sugars in hydroponic nutrient solutions
17. April Controlling pH in hydroponics using only electricity
14. April Maximizing essential oil yields: A look into nutrient concentrations
12. April How to make your growing more systematic
11. April The best cheap sensor setup for relative humidity in hydroponic automation projects
11. April The media exchange solution test: A better measurement of media effects in hydroponics
10. April Using biochar in hydroponics to improve yields

2019 (12)

17. August Six things to consider when running experiments in hydroponics
09. August Why you should optimize your nutrient solution for your particular setup
06. August Five common reason why you’re losing yields
04. August High P or low P? The mystery of phosphorus in hydroponic culture
02. August Using a biodegradable iron chelate (IDHA) in hydroponics
01. August Selenium in hydroponic culture
27. July Five ways to save money in hydroponics
25. July Using electro-degradation to enhance yields in recirculating hydroponics
24. July Using machine learning control methods in hydroponics
23. July Calcium’s behavior in hydroponics
21. July Better understanding pH dynamics in hydroponic culture
20. July Five important things you should know about humidity in hydroponics

2017 (47)

18. November DIY Warm white LED lamp PAR measurements, not so exciting after all!
03. November Cheap DIY high power LED grow lights: Introducing the Zip-tie lamp
27. October Potassium concentration and yields in flowering plants
21. October Five reasons why a dedicated hydroponic testing room is a great idea
03. October The use of phosphites in plant culture
26. September Five things you should know when mixing your own hydroponic liquid nutrients
13. September Humic acids in hydroponics: What is their effect?
03. September How to prevent problems with powdery mildew in hydroponic crops
26. August Five important things to consider when doing foliar spraying
16. August Creating a robust pH/EC monitor for hydroponics using Atlas probes and an Arduino
06. August Comparing the conductivity of two different solutions
02. August Controlling aphids in a hydroponic crop. Part 1.
18. July Five ways to increase your seed germination rates
13. July Making your own DIY plant rooting gel
06. July Building your own DIY high power LED lamp: Part One
30. June What is the ideal nutrient solution temperature in hydroponics?
22. June Are High Pressure Sodium (HPS) Lamps better than LEDs?
10. June Five dos and don’ts for automated pH control in hydroponics
07. June Using triacontanol to increase yields in hydroponics
01. June Salicylic acid and its positive effect in hydroponics
22. May Using titanium to increase crop yields
14. May Phosphorous toxicity and concentration in higher plants
03. May A simple Arduino based sensor monitoring platform for Hydroponics
17. April What is the effect of amino acids in hydroponics?
11. April Calibrating your digital humidity sensors
10. April Probes for constant immersion in hydroponic nutrient solutions
09. April Five things that will damage your pH probes
08. April Vapor pressure deficit (VPD) in hydroponics
07. April Maximizing yields per area in hydroponics
06. April A few basics of leaf tissue analysis in hydroponic crops
05. April Managing a Run To Waste (RTW) hydroponic crop from a nutritional perspective
04. April Using coco coir in hydroponics
03. April Measuring ion concentrations in hydroponics using electronic tongues
02. April Using Peat Moss in Hydroponic Culture
01. April Automated media moisture monitoring in hydroponic crops
31. March Hydrobuddy v1.60: A new update with important changes
30. March Do you really need to be using RO water?
29. March Hydroponic micro and macro nutrient sufficiency ranges
28. March What is the effect of chloride in hydroponics?
27. March Some things you should know about sodium in hydroponics
26. March Using UV sterilization in your recirculating hydroponic crop
25. March What is an ORP meter and why is it useful in hydroponics?
24. March How to prepare your own solutions for EC meter calibration
22. March Preparing your own buffer solutions for pH calibration
21. March Automating a hydroponic system: Sensors and monitoring
20. March Is ortho-silicic acid worth the additional expense in hydroponics?
18. March Nitrate, Ammonium and pH in hydroponics

2016 (1)

30. March HydroBuddy v1.100 : The First Free Open Source Hydroponic Nutrient Calculator Program Available Online

2011 (1)

13. January Almost There Guys ! The New HydroBuddy v1.0 is Just Around the Corner :o)

2010 (45)

04. December Walking Towards v.1.0 : Why Development of HydroBuddy is Taking Its Time
01. October Instrument Precision : Its Importance in the Preparation of Hydroponic Nutrient Solutions
27. September Understanding Reagent Purity and Its Importance in Hydroponics
24. September HydroBuddy’s Online Hydroponic Formulation Database
23. September Hydroponic Nutrient Availability : What “Pushing Out an Element” Really Means
22. September Preserving Fertilizers and Additives – How to Keep them from Going Bad
21. September A Step Forward : Moving from AllHydroponics to ScienceinHydroponics.com
11. September Making Isotonic Solutions For Draining : Preparing Your Own – and better – Clearex
09. September Imitating Commercial Nutrients : A Tutorial Using HydroBuddy (my free Hydroponic Nutrient Calculator)
01. September Bulding a World Without Hunger : The Massive and Passive Hydroponic System Project
25. August Completely Passive, Non-Recirculating Hydroponic Systems : Some Tips for Large Plants
24. August Completely Passive, Non-Recirculating Hydroponic Systems : Yes, Its Possible
23. August Improving Seed Germination : The Science of Seed Priming
20. August My Hydroponics Calculator : Features and Objectives
19. August My Hydroponic Calculator Tutorial : Saving and Loading Formulations and Recipes
18. August Cobalt in Hydroponics : Better or Worse ?
17. August Silicon in Hydroponics : What Silicon is Good For and How it Should be Used
15. August The NPK Mystery – What Do These Numbers Mean and How are they Calculated ?
13. August Truly Cleaning Your Hydroponic System : The Fenton Process and Chemistry
12. August Iron Sources in Hydroponics : Which One is the Best ?
11. August Chemical Buffers in Hydroponics : What is the Best, Cheapest Buffer
06. July Preparing Your Own Hydroponic Nutrients : A Complete Guide for Beginners
24. June Preparing A, B and C (three part) Concentrated Nutrient Solutions, a Tutorial for my Hydroponic Nutrient Calculator
22. June Preparing A and B Solutions Using My Hydroponics Nutrient Calculator
21. June Using my Nutrient Calculator with Commercial Fertilizers : Part No.2
19. June Using my Nutrient Calculator with Commercial Fertilizers : Part No.1
13. June Possible New Features for my Hydroponics Calculator
07. June Building Your Own High-Power LED Grow Lights for Hydroponics
06. June A Simple Home-Made PVC Hydroponic Growing System
04. June Understanding pH in Hydroponics – Part No.2
03. June Understanding pH in Hydroponics – Part No.1
02. June Growing a Hydroponic Garden Without a pH or EC meter
26. May Is OceanGrown Fertilizer a Scam ? A Scientist’s Point of View
24. May Fruit Quality and High EC values in Tomatoes
23. May The Best Outdoor Hydroponic System. A Simple Way to Grow Large Amounts of Food
21. May Crazy pH Swings – How Media and Bacteria Affect pH in Hydroponics
20. May Preparing your Own Chelates – Improving Your Hydroponic Nutrients
20. May Urea in Hydroponics – Positive or Negative ?
20. May Hydroponic Tomato Formulations – Nutrients for Every Growth Stage
20. May How to Have a Constant pH in Hydroponics – No More Corrections!
20. May The Importance of Oxygen in Hydroponic Systems
20. May Making Your Own Hydroponic Solutions – Download my Free Ebook
20. May Hydroponic Nutrients… Why Solid is Better than Liquid
20. May Hydroponic Solutions and Vitamins… NO real proof
19. May Choosing a LED Grow Light for your Hydroponic Crop

2009 (36)

26. February Static Hydroponic Systems, Cons and Pros
20. February Easy Seed Germination with Polyurethane Foam
19. February Salt Concentrations in Hydroponic Tomato Cultivation, More or Less ?
18. February Selenium in Hydroponic Growing of Lettuce
17. February Titanium Dioxide as a Disinfectant in Hydroponic Gardening
16. February Checking the pH of your Hydroponic System, The Easy Way !
14. February Building a Cheap System to Grow Hydroponic Lettuce
13. February My pH Balancing System for Hydroponic Growing
12. February One Plant Hydroponic System, Wick Growing
11. February Outdoor Hydroponics, Growing Without a Greenhouse
10. February Ion Selective Electrodes in Hydroponic Culture
09. February Growing Citrus Trees in a Hydroponic Garden
08. February Beneficial Fungi in Hydroponic Gardening
07. February The NFT Hydroponic Growing System
06. February Disinfecting your Hydroponic Solution with Hypochlorite
05. February Preparing Hydroponics Nutrient Solutions, From Concentrations to Weights
05. February Describing Concentration in Hydroponics
04. February Nitrogen Fertilization in Hydroponics
04. February Rooting Cuttings Naturally
04. February An Organic, Natural Insecticide for your Garden
03. February FAQ – controlling, adjusting and knowing pH in Hydroponic Gardening
03. February A Natural, Organic Fungicide you can easily make!
03. February What are Hydroponic nutrients ? The nature of nutrient salts
03. February Keeping the pH of your hydroponic nutrient solution stable
02. February Hydroponic Nutrients, Are they Unnatural ?
02. February Hydroponic Gardening for Small Spaces
02. February The Hoaglands Solution for Hydroponic Cultivation
02. February Indoor Hydroponic gardening, the cheap way !
02. February Hydroponic Floating System for Lettuce Production
01. February Hydroponic Nutrient Solution Toxicity
01. February Preparing a Hydroponic Nutrient Solution
01. February FAQ – Electrical Conductivity (EC) in Hydroponics
01. February Hydroponic Nutrient Solutions for Lettuce
01. February Hydrogen Peroxide in Germination
01. February Using Hydrogen Peroxide in Hydroponic Crops
01. February FAQ – Growing media in hydroponics