Just got my first MP40!

[moondoggy4]

Thanks for the write up and follow through on your MP40, I have yet to buy one looking to get a MP10 for a 40 breeder build.

[BrianCash]

I want to pull the trigger on two myself, just can't figure a way to hide the statement from the g/f

[Ratpack]

Where do you have it placed in the 90? I have a mp40 on my 75 and had to add another pump (not Vortech) on the other side to get good random flow. I would rather only have the vortech, but one end gets blasted and the other end is slow moving.

[crabbyreef]

I have 2-MP40's on my 90. Is this too much? If I turn these bad boys to 100% my hermits seem to struggle when walking across the piece of shelf rock in the middle of my tank. I am running a bare bottom mixed reef.

[joeman1881]

Originally Posted by Ratpack

Where do you have it placed in the 90? I have a mp40 on my 75 and had to add another pump (not Vortech) on the other side to get good random flow. I would rather only have the vortech, but one end gets blasted and the other end is slow moving.

Sorry for the delay on response...

I have a 4' 90 gallon, so probably the same foot print as yours and I have mine maybe 6-8" below the top. So in yours I would probably put it like 4-6" below the top. Too high up it will splash, and too low you will ll have sand everywhere.

Whats strange is that I look at the surface and don't see too much movement in the far corner, but my Neon Goni is fully extended and I see the polyps swaying away? It must be doing the trick, because I could never get these to survive with my koalias.

Hopefully thats helpfull

[joeman1881]

Originally Posted by crabbyreef

I have 2-MP40's on my 90. Is this too much? If I turn these bad boys to 100% my hermits seem to struggle when walking across the piece of shelf rock in the middle of my tank. I am running a bare bottom mixed reef.

lol, I think 90% is probably a bit overkill. They have a calculator (http://ecotechmarine.com/calculator/) on their site that covers gph, and highs and lows which is what I went by. It claimed 2-MP40's was way overkill, but I was kind of thinking about going the same route. When I contacted ecotech support, the guy I spoke with had a 90 gal and he recommended 2-MP10's, but then followed up saying he was running them at 90% with good flow. I chose to take 1 MP40 because I didn't want to run them that high for noise reasons, and longevity of equipment life. I would imagine running them 50-60% in your scenario would be sufficient, but you know your reef better than anyone so I would just do some trial and error to find an equilibrium.

Do you have any video of your tank with these two guys running in their normal settings? If so I'd like to see.