Water Flow

[valcard]

Have a 75g tank that needs 1875 gph water flow for a reef setup (75x25=1875). Question i have is do you get powerheads that equal up to 1875 gph for the tank or just random powerheads at different gph? Looking at getting 2 Hydor Koralia 3 at 850GPH each. Thankyou in advance for any help you give.

[Max]

Either way but, I prefer to get smaller power heads and place them at random around the tank. It causes a much more chaotic water flow that will make your corals much happier IME.

[vorlx]

I don't have an answer for the overall gph needed for the reef but I have to Koralia 4's in my 75g at advice from several here (was going to go with 2 3's) The Koralias are great. I don't have a reef setup though.

[archer772]

I would go with 2 K-4's or you can go with 2 K-3's and maybe 1 or 2 smaller MJ's across the back. With the Koralias and similar pumps the flow is in a wider stream so you want even higher flow and your corals will like the wider flow better as it will not be a tight stream that will knock things over IMO.

[archer772]

I should have asked but what type of corals do you plan to keep softies, LPS's or SPS's ??

[valcard]

Going to keep different types of corals, not sure as of what yet. Have mushrooms, toadstoal, hammers, zoos, torch, and a clam at the moment. Thinking about doing a closed loop scwd from melevsreef.com