Closed loop flows - How much is too much?

salth2owannabe · #1 02/13/2007, 12:31 PM

I'm looking for sugestions for CL flows on a 105 gal tall (30")tank. My main plans for the tank don't include an SPS tank. I would like a mixed reef tank, but I'm just as interested in the fish. I see guys with 20-25x tank volume flows on their CL and I think this is overkill for my application. I have this mental image of putting fish in a 2500 gph jacuzzi. Is 1000-1500 more resaonable? I would really appreciate your thoughts on suggested flows for my tank.
Thanks

salth2owannabe · #2 02/13/2007, 03:28 PM

Somebody out there has to have a closed loop that can offer me a suggestion or two. I see my question about to fade onto the island of unanswered threads!

RichConley · #3 02/13/2007, 06:03 PM

There aren't really any efficient pumps in the 1500gph range. I'd pick up a sequence Dart, or a sequence snapper, and run that.

I run roughly 6000gph in my 58g tank. Believe me, your fish won't care what you do.

xenon · #4 02/13/2007, 06:27 PM

Quote:

Originally posted by salth2owannabe
I'm looking for sugestions for CL flows on a 105 gal tall (30")tank. My main plans for the tank don't include an SPS tank. I would like a mixed reef tank, but I'm just as interested in the fish. I see guys with 20-25x tank volume flows on their CL and I think this is overkill for my application. I have this mental image of putting fish in a 2500 gph jacuzzi. Is 1000-1500 more resaonable? I would really appreciate your thoughts on suggested flows for my tank.
Thanks

1000-1500gph is NOTHING!

The least flow I would do on your size tank is a Sequence Dart. Keep in mind the larger the outputs the less pressure. So that means your still getting plenty of flow without blasting a stream of water at your corals/fish.

davocean · #5 02/13/2007, 08:07 PM

I agree, 1,000-1,500 is nothing.
Low flow or dead spots gives algae a place to cling to.
I'd do at least 20x
A dart would be nice.
You never mentioned sump flow, do you have one?
You could do 5x sump plus an Oceanrunner 6500(1,700gph) for the loop if your on a budget.

angelopasto · #6 02/13/2007, 08:45 PM

I have two CL for my 300 gal display. One is with T4 800 gph and the other a PANWORLD 1300 gph. The 800 gph is nothing and 1300 is too much - it could be the panworld is a HP pump?