HydroBuddy v1.50 : The First Free Open Source Hydroponic Nutrient Calculator Program Available Online:o)

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HydroBuddy is a completely free and open source program for the calculation of nutrient solutions for hydroponics and general agriculture built by me – Daniel Fernandez – based on my experience in hydroponics as a professional chemist. This piece of software was coded from the ground up using the Lazarus open source programming suite and implemented using appropriate database solutions as well as a  powerful linear equation solving algorithms from AlgLib. HydroBuddy is available for Linux, Windows and MacOSX (v >10.4). HydroBuddy is released under the GPL license. For Linux or Windows installers are included, for Mac simply extract the zip file and run the Hydrobuddy application.
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2-21-2013 8-03-10 AM
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These are some of HydroBuddy’s features :
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  • Calculates the weights of specific substances needed to arrive at specified concentrations of different elements (formulation to salt weights calculation)
  • Easily fine tune your salt weights after calculations.
  • Calculations in ppm, mmol/L, mol/L and meq/L.
  • Calculate liquid additions in mL and add any custom substances as liquids
  • Edit the percentage elemental composition of each substance or add new ones to fit your needs
  • Powerful open source linear equation solver provided by AlgLib
  • Always tries to find the best mathematical fit to a formulation by a given group of substances
  • Allows to get the concentration values for the addition of a certain specified amount of substances (salt weights to formulation calculation)
  • Easy-to-use interface for the addition, edition and assignation of substances to calculations
  • Data logging module to help you track the EC and pH of your crop
  • EC prediction module based on an empirical mathematical modification of a calculation based on limiting molar conductivities
  • Use the resulting weights of a formulation calculation to perform a calculation of the opposite nature and vice versa (easily allows you to see the effect of manual modifications)
  • Calculations for both direct additions and A+B concentrated solutions
  • Use any custom substance as a part of an A+B concentrated solution calculation
  • “Copy Commercial Nutrient” module which allows you to copy the ppm results of a commercial nutrient formulation
  • Water quality module allows you to include water quality analysis within the calculations
  • Adequate implementations of instrumental and gross errors with custom instrument precision input
  • Proper database implementation allows you to easily save your custom formulations
  • Set default water quality and data log data sets that load automatically on program startup
  • Program automatically updates on startup (windows version only)
  • Save and load formulations using any concentration unit.
  • Choose between grams or ounces
  • Choose between liters, gallons and cubic meters for volume inputs
  • Ability export data log or calculation results to a CSV file
  • Tutorial tabs showing and explaining the main features of the program !

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The program allows anyone to easily carry out calculations for the preparation of nutrient solutions, a very cumbersome task that can take a lot of time and effort when done manually. If you’re having trouble with HydroBuddy and you would like to purchase support please email me at dfernandezp@unal.edu.co with your requirements to receive a quote.

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If you are using HydroBuddy for academic purposes please cite its use as follows:
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Daniel Fernandez, “HydroBuddy: An open source nutrient calculator for hydroponics and General agriculture”, v1.5, url: http://scienceinhydroponics.com , 2013

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You can download the program through the following links:
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