Mp40 undertow

[Akwarius]

What's the best placement of a mp40 to maximize undertow and surface rippling? High, middle, low? I've been running mine slightly above middle and am thinking of changing things up.

 

[Glenn]

To close to the bottom and the undertow will mess up your sand and crushed coral; to close to the top and you'll get too much rippling; I've basically done mine like you seem to have yours - slightly above middle so that I get a little rippling at the surface.

 

[Akwarius]

How much rippling do you consider too much? Just an aesthetic choice or will the rippling have a detrimental effect on light transmission?

 

[dakotasreef]

I have mine approx 8" from the surface on my 120. I'm running one on each side and back. It creates a steady but not violent undertow. I tried placement with just one initially and never had crazy undertow. I do not think with my tank size and rock work I could achieve a strong undertow. It would be nice though.

 

[Akwarius]

Do you have mp40's on each side or mp10's? I would expect the undertow to to be pretty strong with 40's unless you have a lot of rockwork.

 

[dakotasreef]

40's.

 

[Akwarius]

Ok. I may just have to add another 40 to get the kind of action I'm looking for.

 

[dakotasreef]

Unfortunately you are probably right. I know I tried different placement many times with one then two. But honestly, with 3 in my 120 sps tank I would not trade it for anything.

I had 3 of the mp40w's before and I don't know if its me or not but I swear the new ecosmart modes seem so much more efficient.

 

[Akwarius]

I swear the new ecosmart modes seem so much more efficient.

They probably are. I know that ecotech improved the reef crest program and that's the only setting I use.