Subject: Which plants are best suited for hydroponics and w

I am about to be doing a project for my AP Biology class evaluating the 
effectiveness of hydroponic growing methods.  I am planning on using 
both soilless culture and water culture setups, as well as a setup in 
potting soil as a control.  I have read that beans are often used in 
hydroponics experiments, but I have not been able to find out why this is 
so.  Also, I am concerned that bean plants will grow too large for my 
project; I am planning on growing them inside with plant lights for a 
minimum of 3 weeks, possibly longer.  For this procedure, what plants 
would be best to use, and what are their optimum pH and other growing 
conditions?  Also, I know that there are commercial nutrient solutions 
available for hydroponics, but I would like to know if it is possible to make 
your own.  I found a recipe online, but it was incomplete; it simply lumped 
all the micronutrients as "trace elements."  Thanks!

Re: Which plants are best suited for hydroponics and w