What size is the tank in your rack design? What is the clearance like between shelves? I did a stacked garden once, but I got sick of having the tank on the floor for viewing purposes.
For lighting check out the hydrofarm t5ho strip lights. Daisy chainable with decent reflectors. Lettuce etc don't need much light.
How large are the tilapia?
The tank is about 140 gallons. Clearance in between the two plant media containers is a bit too little, it's only just over 10 in.
Kind of an architectural sacrifice there...
I'll look into those lights, thanks.
the male Tilapias are close to a foot now.