I'm in the planning stage of building a new 730 gallon aquarium in my new office. I didn't originally plan on this size of tank, but my wife's office will be located next door and we are having a 230g custom built and I talked with the builder about a predator tank and he sparked my interest with a fair price. I do need some help with the filtration system and read on the forum about the sealed pressure filter systems, and I'm intrigued. And help on where to find on the web would be appreciated. Glad to be here. david