Powerheads

[Supra]

Do fish need some sort of dead spot so they can relax? Or constant circulation everywhere is fine?
Supra

[mr_X]

they don't need a dead spot. you can use timers on your power heads to cut down the flow at night if you like, but it hasn't mattered to any fish i've kept.

[Supra]

What kind of circulation should I be going for? I have 1 powerehead, 1 hob filter, and 1 air hose. The tank is 25g. Is this too much?
Thanks
Supra

[mr_X]

air hose? you don't want a bubbler in a salt tank. that would be a mess!
i don't think what you have is too much.

[Phranque]

Most fish live on reefs, which have tidal currents, so circulation everywhere is fine, as long as it's not overpowering...... plus you want to prevent dead spots to avoid nitrate build-ups (assuming reef since it's in the SW & reef section).

[Supra]

I put the bubbler behind 1 large piece of live rock because I thought it might have been a dead spot. Should I get rid of it? Not a reef yet but that is my plan.
Supra

[mr_X]

Yes. Remove the bubbler. Add a power head if you need more flow.

[Supra]

Ok thanks
Supra

[Gti_Leo]

Originally Posted by mr_X

they don't need a dead spot. you can use timers on your power heads to cut down the flow at night if you like, but it hasn't mattered to any fish i've kept.

woudl you actually cut down the power heads at night? i don't think that would be a good thing, keep things like nature and in nature at night is when the tides come in which usually flow more water and bigger waves, plus corals feed at night so its always good to throw things around mroe at night so they can extend and feed

[Dary421]

Originally Posted by Phranque

Most fish live on reefs, which have tidal currents, so circulation everywhere is fine, as long as it's not overpowering...... plus you want to prevent dead spots to avoid nitrate build-ups (assuming reef since it's in the SW & reef section).

A couple oh years ago while snorkeling in kona I came over the top of this coral head and watched this giant school of assorted fish in a real heavy surge zone getting sucked right pass me at a very rapid rate only to be pushed back just as fast a moment later in the other direction,.they appeared to be enjoying the whole scenario ,. Most reefs at any given time have alot more circulation than we have in our tanks ,..IMO as long as the fish aren't being bashed against the rocks they'll enjoy it.