I 've just started into aquaponics a month ago, I have a 600 gallon pond with gold fish and running a flood and drain system with PVC vinyl post. I've been doing alot of reading that my head is ready to explode.. ...but is all good. I am glad I found this forum with alot of info for me to get started. My goal is to run a system with blue tilapias if I can find a place to buy them in Orlando or close by please let me know.....