I have a flow question:)

Setting up a 29 gallon reef tank. Should I use a switching current wave deflector, SCWD, with a closed loop system or two powerhead connected to a wavemaker. I do not want to use a huge return pump because I want slower flow through my sump. So whats the best solution to my problem. I am asking you all because I don't know. Thanks in advance.

 

I've read more than once that a few powerheads, strategically aimed, will create enough turbulance and random flow that it's a decent enough facsimile of the ocean. As for a wavemaker that turns powerheads on and off, you must use either low voltage models designed for such use (like the 12V koralia DC controller/PH package); or powerheads specifically rated for on/off operation, and there aren't many. There do exist wavemakers that use soft, slow, or gradual start circuitry to mitigate this issue when using PHs not designed for such use, but I think it's more trouble than it's worth. If you look at enough folks' designs, you may come to the opinion that wavemaking isn't really critical. Water movement is critical, and it's easily enough achieved with multiple PHs. Although they're laminar flow in nature; if aimed properly, many sub-eddys and secondary currents and flows are created.

If you have an SPS dominated tank, the more flow the better indeed, but if you're going with LPS and/or softies for the most part, I'd say a few smaller PHs will do the trick. You might have to play with the aiming a bit to get it right, but IMO it will be more than sufficient to maintain a healthy tank.

FWIW, I've heard more negative things about the SCWD than positive. They might have changed their product for the better, but I've read they're prone to gunk ups and are high maintenance items.

I found this article particularly informative, written by a professional in the field. Have a read.

Good luck.

 

Throw in two hydor korialla 3s and call it a day

 

I'll check on the hydro kor. 3's. Anybody else using an wavemaker on a 29 gallon?

 

If you do use a wave maker, use maxi jets i have heard they work the best,but honestly i dont see the need for a wave maker on such a small tank

 

If this helps you any, when you watch the polyps on the corals in my tank, they are never blowing in the same direction. As long as you have enough total flow in the tank, the turbulence will create its self if that make sense