Ok, so many know I'm building this monster tank. It's actually closer to 1200 gal. So as for cycling, I'm thinking two things. 1 is to use something like bio-spira at 32oz and very expensive. The second route is through a local fish farm. I talked with this fellow and he had nothing good to say about bio-spira. He suggested I stop in, and they could give me several milk jugs full of their sponge squeezings. This would be billions of bacteria ready to go. I would dump them right in the filter and fire the thing up. I'd probably start fishless and add a little ammonia to get the BB happy. What do you guys think? The sponge squeeze juice would be free, and I really think it would work. As long as the water in the tank is chemical free.