Higher flow? 250g tank, 3x MP40's, thinking of adding a gyre. Too much flow or a good idea?

Hal3134 · Oct 19, 2023

I have a 250g mixed reef tank (72x28x30H), with a decent amount of rock that interferes with flow. Rock is basically laid out as sloping upward to the rear.

I have 2x MP40QD's synced on one end in Reefcrest mode at 100% max, and a third MP40QD on the opposite end in Reefcrest mode at 100% in anti-sync with the other two. I'm thinking about adding a programmable gyre with a max of 4200 gph. Would this be a good idea, or too much flow?

Troylee · Oct 19, 2023

It would be great! Your tank is a similar size to mine and I run 2 mp40’s and 2 ice cap 4k gyre’s it seems perfect to me. The gyre moves a ton of water but it’s a slow flow, nothing compared to the 40’s

bakbay · Oct 19, 2023

There is no such thing as "too much flow" in the reef tank, unless you got some sensitive chalices & LPS. So really depends on the type of corals you're trying to keep. For SPS tanks, the more the merrier! On my 150g cube, I have 3 WAVs and 2 MP40s, on my nem-dominant 180g, I just have 2 MP40s...

Hal3134 · Oct 19, 2023

bakbay said:
There is no such thing as "too much flow" in the reef tank, unless you got some sensitive chalices & LPS. So really depends on the type of corals you're trying to keep. For SPS tanks, the more the merrier! On my 150g cube, I have 3 WAVs and 2 MP40s, on my nem-dominant 180g, I just have 2 MP40s...

What are "sensitive LPS"? I have some candy canes and frogspawn.

bakbay · Oct 19, 2023

Hal3134 said:
What are "sensitive LPS"? I have some candy canes and frogspawn.

My hammers & torches are ok with high flow, as long as they are random and not directly blasting them. My acans & scolies do not like strong flow, random or direct!!