Quick update and question.
I have my building permit now for the FT (fish tank) building and greenhouse! whoohoo. Now I need some grading done and some crusher run spread for the building base. Getting some quotes this afternoon so hopefully that will be done by this weekend.
Should I go with #4 River Rock (Brown) 1 1/2″ x 2″ or #7 River Rock (Brown) 1/2″? I’m going to need about 1.5 cubic yards per 10’x4’x12″ GB but I don’t know if I should put in 9″ of river rock and the last 3″ with hydroton. Or should I just go with all river rock? The river rock is $45-$55 per yard so not too bad. I can get 50L of hydroton for about $30 at the hydroponics stores in Atlanta.
I’m planning on having 3 GB’s in the greenhouse and will probably set the system up as a constant flood with a syphon setup. I will have 2 FT (round; 675 gallons each) along with 1 (or 2???) sump tank. Should I match my sump tank(s) volume to match the FT’s for a constant flood setup? Did i mention that I hate math?
C & L Farms 