Mark mark mark you are the only guy I know that has upgraded from a 55 to a 90 to a 260 without anyof the tanks ever seeing water
To try to throw some ideas at in regards to your question. I personaly dont think the 4 seaswirls will give a tank that size the flow it needs, also swirls tend to be ineffective when it comes to flowing the lower areas of the tank. If you have 2 3000 this is what I would do.
1. create a closed loop and have the outputs enter the lower parts of the reef (say a couple inches above the DSB) have these outputs (say around 6 using locline) blow into the back of the rocks and through them in an upward direction.
2. create another closed loop to span the top of the tank. again outputing through locline, with the exception of using a motorized
ball valve to split 5 outputs per side of the valve. this way you will get a good random flow from either side to the valve and a solid flow from under and behing the rocks to keep the deterious from building up thier.
Again MArk it depends on how much mula you want to spend and what u already have. If you want give me a call and I can hepl you design it.
mike
