2 Mp10's or 1 Mp40?

[shelbylen]

I have a a 90 gallon cylinder tank, that we are starting on the cycle. I am wanting to run some coral. I am trying to decide what is the right amount of flow and placement for the power heads. Would you put one Mp40 in the middle? Or would you put 2 Mp40's one high one low? Would you run 2 mp10's the same way? Whats your thoughts. The tank is 19 inches from the top to the rock in the pic, the total tank to the bottom, where the sand starts is about 3 feet. Thank you for your help.

 

[katieandjon]

Do you know if either with work on curved glass? I would have thought they won't?


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[shelbylen]

I don't know??? I could not find any info on that, I know I have a cheap power head in there now, and it does. So I would assume it would

 

[shelbylen]

I just thought of something, I bet they have to sit flat against each other to work properly, do they make an angle or something for them?

 

[katieandjon]

Don't know if they make an adapter for them, never heard of it. On flat glass they sit flush to each other (with glass in the middle) for the magnets to work to drive the propeller.


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[ReefWreak]

That was why katieandjon asked, because a vortech definitely won't work on curved glass. I actually clicked into this thread because I was curious how you were envisioning doing this.

Depending on the thickness of the acrylic and the curvature, you might be able to place shims to even out the dip on the inside and the bridge on the outside to make a flat surface, but I think with a tank that size, the curvature will be too tight for that to work (the net thickness would be too much if shimmed).

Honestly, what I would recommend is looking into a Gyre pump or two. I would set them up in vertical position, vertically parallel, and run them on low slow forward motion. You could set the pumps up to go in reverse every few hours so you're not creating entirely laminar flow (although I think in this instance, laminar flow will likely be unavoidable), or maybe even have them pulse on-off (do it in software, not through a lamp timer) every few seconds so that they move the entire volume of water and then stop again.

I'm really curious how a cylinder tank works out, particularly if you're going to be doing corals. Let us know the results!

 

[shelbylen]

What about an icecap 3k gyre? Anybody had any luck with them?

 

[shelbylen]

Thank you ReefWreak, I believe all of you guys made valid points. I never thought of the curve until it was brought up. Don't know how I missed that lol. Your thoughts on the gyre where exactly what I was thinking. Is there any recommendations to brands or any that talk like the vortec's?

 

[shelbylen]

Ok, so I ended up buying 2 maxspect gyre power heads. I plan to run them vertical and see how they work. thanks for everybody's input.