Koralia 3 or 4 for 75G

flinka

Member
I am in the planning stages of a 75G reef (48L x 18D x 21H). I plan on keeping softies (zoas, leathers, mushrooms, etc.) and LPS, maybe some EASY SPS. This tank is going to be "floating" in the room and will be viewable from all four sides so there really won't be any front or back. Accordingly, the rockwork will be centered in the tank off of all four sides and will reach between 1/2-2/3 to the top of the tank.
I am thinking about using two Koralia powerheads, one on each "side end", flowing across the 48" length of the tank. I will also have return flow from my sump/fuge of about 300GPH.
I know the flow from the Koralias is V-shaped, not laminar so different considerations come into play with respect to flow rates. I am also trying to balance the corals needs and comfort, not having a sandstorm and also not having to use supplemental powerheads.
So, I would like to know any thoughts on whether I should use two (2) Koralia 3s or two (2) Koralia 4s.
Thanks!
 

flinka

Member
Thanks for the reply. Your rockwork is similar to what I have in mind - open with a few ledges.
1) Do you find one Koralia 4 to be enough flow?
2) What about the magnet? - I have heard the magnet is not strong enough for the 4s and that the powerhead falls or is unstable.
 
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