MP40 vs MP60 for 6ft tank?

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sanzz18

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Hey everyone. I bought a waterbox 220.6 and was wondering if I should go with mp40s or mp60s. The glass is 3/4” thick. I like SPS to cover the upper rock scape but love LPS and everything else, so definitely mixed reef. What do you guys think?
 
Hey everyone. I bought a waterbox 220.6 and was wondering if I should go with mp40s or mp60s. The glass is 3/4” thick. I like SPS to cover the upper rock scape but love LPS and everything else, so definitely mixed reef. What do you guys think?
2 60s, 1 on each end , alternating currents- if your wallet can support it.
 
I have a 180 gallon tank, a 6 footer. I have an mp60 on the left and 2 mp40’s on the right. The 60’s give a great amount of flow, but if I were to do it again, I would have 4 mp40’s, 2 on each side. My 60 is somewhat noisier than my 2 mp40’s. And my mp60 never worked right with my reeflink.
 
I like both of your explanations. I am still so perplexed lol. Keep the suggestions coming. Would love to gather more opinions before I try to make a decision.
 
Are you running a bare bottom or sand?

On my bare bottom, i start to have vortexes or sucking air whirpools from the water surface when i have my MP 60 off the bottom of the tank, so the MP 60 is placed directly on the bottom. I found that MP40s dont haven enough umph to keep the detritus off the bottom, again running a bare bottom. To correct this issue i run one in each corner of the six foot tank, all on reef crest and some gyres up higher in the tank. But i found that i can have MP 40s higher on the glass before they start creating vortexes unlike the MP 60. Point of reference, I am talking about 23-25" deep tanks.
 
4 mp40s. Then you can place them high or low or wherever you want. It will allow for a more random flow as well.
That has crossed my mine lately.
Are you running a bare bottom or sand?

On my bare bottom, i start to have vortexes or sucking air whirpools from the water surface when i have my MP 60 off the bottom of the tank, so the MP 60 is placed directly on the bottom. I found that MP40s dont haven enough umph to keep the detritus off the bottom, again running a bare bottom. To correct this issue i run one in each corner of the six foot tank, all on reef crest and some gyres up higher in the tank. But i found that i can have MP 40s higher on the glass before they start creating vortexes unlike the MP 60. Point of reference, I am talking about 23-25" deep tanks.
I am 100% running sand. I like the natural look of the sand and some of the livestock you are able to keep because of it.
 
Mp40 wont stick well on a 3/4” thick glass. I had that issue with mine. Mp60 is just too darn expensive and not worth the money imo
 
From what I heard, not 100% sure though, that it was a previous issue on older models and the 3/4" glass. Not sure though.
 
I got a 200 gallon peninsula, with 3/4" glass. Was thinking this same debate through.

I think i want the mp60's, two on bottom of overflow end and two mp40's also on over flow end. Really don't t want pumps or gear on any other side of the tank .

Will this work?

Other options other than MP's
 
MP 40's will stick just fine...

Agreed. Remove the spacer on the back. Not the foam spacer, but the back cover. There is text on the back that explains it. Honestly I didn't know it either when I upgraded to 3/4 glass that the back could be removed.
 
I am setting up a 300 gallon peninsula.. 6' x 3' x 27" tall. I was going to do 2 MP60s up high on one side and 3 MP40s lower down on the same side. I was also considering a large Gyre up high on the other side. I don' want to see the pumps on the 3 sides of the tank.

Wont be running bare bottom so am a little worried about sand in the water column. I have been looking for a large quantity if reef bones to use in the high flow areas instead of sand.

Hope this works :)
 

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