Turnover rates & waterflow

Myka · #1 02-28-2008, 02:05 PM

I don't know how you guys can have such high turnovers with LPS...?? As soon as I add another small powerhead I get poor polyp extension no matter how I try to arrange the powerheads. I just re-did my entire tank and I didn't have any powerheads in it for 24 hours and had the best poylp extension on the LPS I've ever had. I added my Koralia 2 which is blasting straight onto my SPS and only very indirectly hitting my LPS, and the poylp extension is definately a bit less on the LPS, although obviously my SPS are happy 'as a clam'.

ron101 · #2 02-29-2008, 02:08 AM

Quote:

Originally Posted by Myka

I don't know how you guys can have such high turnovers with LPS...??

Because those numbers are next to meaningless.

Too high of flow velocity at the coral in question is what will cause problems. High flow rates can be achieved at various flow velocities (eg large prop/slow revs vs small prop/high revs.)

I think you can have too high of turnover in a tank. Tanks are not comparable to the open ocean where the cross sectional areas of ocean currents are orders of magnitude larger than the 2 square inches of a tunze stream outlet...