Is 700 gallons per hour to much to have for a 30 gallon long tank I have one power head in my tank with two back pumps circulating the back pumps are facing the corners of the tank and the power head is facing across the tank in the back . Is this a good setup for circulation any recommendations ?
To much circulation
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johnsamm7
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I have to vivid fancy clowns in there right now they seem to be keeping to the right side of the tank right up against the glass for the most part I plan on putting corals I. Eventually after my tank is running for a while they swim out but they haven't really went towards the live rock at all I don't know if that's how they usually act or if there's to much circulation they don't wana fight the current
Reeferfourlife
Coral hoarder!
When I had clowns, they love to swim around a corner towards the rear. Once they get use to your presence, they will come out more. Right now you have enough flow for softies and lps. Some sps but they like more flow.
nemo1017
Active Member
Clownfish will pick a spot and camp out for good. As for flow; what reefer said. Determine what kind of corals you want to keep and adjust accordingly. Soft coral and lps don't require a lot flow, just enough to keep them swaying but not tearing them up. Sps however need a quite bit more flow. Each tank is different though so it'll take a little manipulation until you find the sweet spot in terms of flow.
Really depends on what type corals you plan on keeping. Some like strong flow some do not. I find that moderate flow does the best with most tanks.
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johnsamm7
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Okay cool that's gives me some good insight thanks guys and I have one more question as well for lighting I know certain sites say 8-10 hrs on how many should I keep the lights off completely for or dimmed real low for I know the longer u keep the lights on the more algae what would u guys recommend I have a Fluval sea 25000k 46 watts. Thanks a lot I really appreciate it
Reeferfourlife
Coral hoarder!
Was just looking at the par reading for your light. Your light will only grow softies and some lps. Unless you want to place your corals like 3inch from waterline to try and grow sps. Again your light needs depends on your corals too. A lot of people keep lights on from 8-12 hours depending on intensity and coral needs. You will need to find the sweet spot for what ever coral you are keeping. Thinking with this light, you will need longer photo periods.
nervousmonkey
LPS Lover, SPS Enabler
Nah, not at all, but it really depends more on your inhabitants than any math formulas... You can have a lot of flow, and still have dead spots, just due to rockwork, tank dynamics, flow dynamics, etc., so really just look at your tank and see how it's responding. A good way to see how your entire tank is doing is to get some string and tie it to a stick, and put that in your tank in different places and see how well it's blowing. Find the dead spots and adjust from there.
Frogspawn or hammer will like slow flow that's not direct, and they prefer to have *some* randomness to it, but that's going to depend on your powerheads....
May need to get a better light, not now, just something to think about.
Frogspawn or hammer will like slow flow that's not direct, and they prefer to have *some* randomness to it, but that's going to depend on your powerheads....
May need to get a better light, not now, just something to think about.
mcarroll
10K Club member
There are too many variables to put a number on it in a simple way.
A rough rule of thumb if you have sand is that you should see some grains tumble across the top of the sand bed, but at the same time you don't want to blow your sand bed to one corner of the tank.
(It's easier to accommodate more flow without a sand bed.)
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