JBJ 28g Nano Cube HQI - Water flow

[bonzoid]

I have added a Tunze 6025 pump to my nano cube to increase water flow as I want to add some corals. I have had the tank set up for about 3 months.

I have positioned the pump at the back of the tank about 5 cms down and pointing at the surface towards the front of the tank. The flow is OK but does not seem to fluctuate at the bottom of the tank. I am thinking of adding another pump to the other side to create an X type flow? I don't want to end up with a washing machine effect so should I go for a smaller pump or would another 6025 be OK?

Any advice would be appreciated.

Thanks

[happyclam]

I think you would be fine with (2) 6025's (66x turnover), though I am a beginner so you might not want to listen to me. By washing machine effect do you mean creating a sand storm?

[bonzoid]

Hi Happyclam,

Thanks for your comments. By washing machine effect I mean water circulating too fast resulting in fish and other inhabitants being swept around the tank.

[saltwater_wannabe]

I upgraded both return pumps to MJ1200s and added a pair of Koralia Nanos that are on a wavemaker (RK2). I move them around periodically to make sure that there is no 'dead zones' in my tank.

[CorkPullerPHL]

I believe rock work is the most important variable determining how much flow any given tank needs. If your aquascaping is far enough away from the rear wall and sides, I have found that one Koralia nano and the stock pumps provide more than enough flow for sps'.

I had two Koralia Nano's in my tank previously, but found that they counter acted each other at the center of the tank and prevented much of the floating particulate to make it back to the overflow.

My current setup allows the two stock pumps to create alternating laminar/wave action against my single Koralia Nano, which is always running. I have found that this keeps the rear wall very clean, and creates plenty of wave action for my SPS. Additionally, I'm able to keep LPS in some of the nooks and crannies created by rockwork. This was impossible with two Koralias.

Best of Luck!

[bonzoid]

<a href=showthread.php?s=&postid=14083724#post14083724 target=_blank>Originally posted</a> by saltwater_wannabe
I upgraded both return pumps to MJ1200s and added a pair of Koralia Nanos that are on a wavemaker (RK2). I move them around periodically to make sure that there is no 'dead zones' in my tank.

Thanks for that. How easy was it to upgrade the return pumps.? There isn't much room to get at the stock pumps in the rear chambers, and they are right at the bottom! Any instructions would be welcome.

[bonzoid]

<a href=showthread.php?s=&postid=14084145#post14084145 target=_blank>Originally posted</a> by CorkPullerPHL
I believe rock work is the most important variable determining how much flow any given tank needs. If your aquascaping is far enough away from the rear wall and sides, I have found that one Koralia nano and the stock pumps provide more than enough flow for sps'.

I had two Koralia Nano's in my tank previously, but found that they counter acted each other at the center of the tank and prevented much of the floating particulate to make it back to the overflow.

My current setup allows the two stock pumps to create alternating laminar/wave action against my single Koralia Nano, which is always running. I have found that this keeps the rear wall very clean, and creates plenty of wave action for my SPS. Additionally, I'm able to keep LPS in some of the nooks and crannies created by rockwork. This was impossible with two Koralias.

Best of Luck!

Thanks for that. Where did you position the Koralia in the tank and direct it. Any further information would be welcome.

[tinky]

The Koralia nano is very weak, the Koraila 1 is better suited for your tank. I have one in my 12G and it is perfect almost too strong, in you 28 would be great. Atleast see one in person at a LFS before you purchase.

[LulusMoogle]

I've got a Koralia 2 in my BC29. It's positioned at the back, turned towards the middle of the tank and pointing at the surface. I get a very nice circular flow that's just right and doesn't disturb the sand or blow the fish around.

I've got a Hydor Flo in on the end of the pump returning water from the back chambers, too. Adds some extra flow in the back to make sure there are absolutely no dead spots behind the rocks and allows for extra oxygenation.

Just an idea or two to throw out.

[thegrun]

I run my stock pumps through the wave maker and added a 500 GPH pump that runs my chiller (it probably only delivers 400GPH with pressure drop). I installed the output of the new pump about 4" below the existing left hand side discharge. The flow in my tank is fairly strong, but not enough to be a problem. I can find areas with lower flow for the corals that don't like high flow and the fish seem fine with my set-up.