ACTUALLLLLLY, since you don't understand what I was saying.....their setups were plumbed in PVC and pumping 10X what a overpriced mp40 would do. A few stores had various powerheads, but with the same idea. One even had a retro plumbed with PVC. I'm talking high end stores....not PetsMart. They have just about any powerhead on the market in their stores for sale...I wasnt asking the guy which powerhead to buy, I asked him "WHY" they were setup that way.....
But anyways....it's a really interesting concept. The flow was consistant, effective, and showed no visual deadspots (and I was watching them for quite awhile because I'm planning my 240 build). The tank I was mainly referring to in my previous post was approx 30ft long 3ft deep and 8ft wide.....with TONS and TONS of liverock and a LOT of $$$ in coral frags for sale, with the mother colonies on the rockwork so you can visualize how the frags would grow out. This tank had thousands of lbs of liverock and no sign of detruis deposits, excessive algea growth in spots, ect. As the water flowed across the tank and hit the wall on the other end it essentially "rolled" downward and back towards the end where the return lines were, sweeping the floor bottom and liverock as it moved, then hit the wall and "rolled" back to the top, bringing particles with it, the surface skimmer had no problem sucking it up. Sweet setup and well thought out.
No matter what type of "powerhead" one can afford, wouldnt 2+ powerheads working together to "roll over" water in a tank (kind of like a whirlpool on its side) work better than 2 powerheads criss-crossing or aimed towards each other? Seems like you'd be losing a lot of flow. Once the powerheads were on for awhile and got an affective "roll" started, it is a lot easier for them to keep it going and thus creating a LOT more flow throughout the whole tank than a Koralia could normally put out. Exactly like a whirlpool....just on its side... LOL :thumbsup:
The "concept" of this works with any powerhead you choose.....I thought this thread was referring to "optimizing flow" and how to create an effective pattern, not buying better equip. and spending $$$. I research every purchase I make thoroughly and 100% agree with you that it is VERY important to research. :thumbsup: