Hello Ron,
Using a home built
drip system setup in my back yard in Southern Florida my reservoir, ( 10 gal. )
will sometimes be over full with rain water or almost empty due to evaporation i.e. heat and humidity
or lack of it. I am using using General Hydroponics 3 part
nutrient system. Other than buying a meter
or dip stick that I can not afford, is there any good way to check out the strength of my liquid before
I add water and more nutrient or pour it out and use for 'ground plants when too full? or good rule of
thumb to go by? Thanks Greg B. Fort Lauderdale Fl. -- President and Founder ...