Flow

[rob.holbrook]

How much flow should I have in a 90 Gallon tank with a sand bottom?

I have a Korala 2 and a Korala 4 and a Mag 7 return pump and a off brand powerhead that does like 200 gallons per hour


do you guys think that is enough?

[okkiedokki]

I've been trying to transition from lower flow corals to high flow and right now I have a modded maxijet 1200, koralia 3, and a sedra 700 for my return pump. I think the modded maxijet might be too much because my sand in some spots is blown away so I have to find a good spot for the pump, or maybe downgrade to a koralia 3; right now I have 50x turnover.

[haggarse]

I have a 75G with a Panworld 50PX-X (1100gph) return pump, a K4 and two K2's. Depending on your load, you may want to ensure all areas are getting enough flow. I would say you are ok but could probably stand a little more flow.

[MarineFishGuy]

I have a 75g with:
Mag 18 (against 14 ft head ~ 550gph) return
1 Tunze 6045
1 Koralia 4
2 MJ1200 with Hydor Flo attachments (rotating deflector).

I had a modded MJ1200 that was replaced by the Koralia 4, although I think the MJ moved twice as much water.

My corals sway in the currents, but I think I could use more flow. I have the base of my live rock very open to allow good water movement.

[cl2ysta1]

i have a 72 bowfront with a return pump, and two koralia 4's mostly softies, and a few sps.

[walmart]

On my 90 I have a Mag 7 return and 2 K4s.

[draleigh]

where the heck does everyone find room for all these powerheads. I have 2 hdyro 4's, 2 maxi 1200's (hacksaw mod) and then my returns on a 180 and i was going to put in 2 modded maxi1200's (sureflow mods) but really couldn't find the room. I mean they would fit but i am sick of looking at the powerheads

[hollback]

Flow depends on what type of corals you want to keep.

My 75 gallon is mostly SPS and I have a little over 4,000 gph and my sand stays put.

[walmart]

I am not really happy with my flow and I am looking for more. The K4s take up more room than I thought so I am going to upgrade my mag 7 to get more flow. I am getting around 30X turn over rate.

[walmart]

I am getting around 3000 GPH in my 90

[cl2ysta1]

the two koralia 4's in my 72 seem to be perfect. i had to work a long time to position the flow to where it wasnt blowing everything over. it kind of created a sort of whirlwind in the tank. it seems everything is moving without being blown everywhere. the fish love it. they ride the current across the tank

[cl2ysta1]

it looks something like this