I'm surprised that bsfman hasn't posted.

Quote Originally Posted by bythescruff
would it make sense to let the grub tea drip into the water flowing to the hydroponic grow beds? Or does it contain other substances that would make this a bad idea?
I'd say 'no'...don't do it. It may become too strong.

BSF are good food for fish. Just remember they are a little high in fat. Your fish will do better with a balanced diet.
Tilapia are omnivore...they need veggies too. As they become bigger, they need less fat/protien.