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Jkraft136
03/16/2010, 06:42 AM
Is a mp40w and a k4 enough flow for sps in a 75g or would you go mp40w k4 and a k3?

njfish77
03/16/2010, 07:47 AM
the mp40 may be enough by itself, then maybe some koralias behind the rocks.

biecacka
03/16/2010, 08:06 AM
depends on rockwork and also size of sps. as they get larger they will block water flow so it might need more down the road, but for now id say that you have enough with your original idea. mp0 and a k4. postioning of the powerheads is what will determine this now.
hth

Mounda
03/16/2010, 08:20 AM
Vortechs are cool but do you really need one ? I say get the 2 K4s thats about 2500gph for a 75g tank, 33x your tank size.

ryanlala
03/16/2010, 08:31 AM
It all depends on your rock work, your return pump, and where your overflow is at. You dont want any dead spots so its hard to say what combination will work. If you just want to own vortec get one and a k4 put them on opposite sides of the tank and see what the flow looks like. If you have some dead spots add another small koralia there.