Will higher flow promote PE?

[MONTANTK]

I’ve been looking at my tank and my acros are doing well but the PE doesn’t seem that great. Had me wondering if upping the flow would promote better PE. My Nero 3 runs around 620gph while my return is about 140gph. Tank itself is 7.4g

 

[PatW]

That comes out to 100 times flow. That is more than most SPS people run. The figure I see for SPS is 40 times flow. But World Wide Corals does 100 times flow. I think your flow is not a problem. It must be something else: light, nutrients, stuff to filter from the water column, you did not chant the right incantation.....

 

[MONTANTK]

That comes out to 100 times flow. That is more than most SPS people run. The figure I see for SPS is 40 times flow. But World Wide Corals does 100 times flow. I think your flow is not a problem. It must be something else: light, nutrients, stuff to filter from the water column, you did not chant the right incantation.....

Yeah I’m just trying to get a feel for acros. This is my first real stab at them. I my mag and calcium has been a little low and I’m slowly bringing it up so hopefully that helps. I’d also like to rent a par meter at some point

 

[jda]

Not likely. Corals mostly use their polyps in the daytime for gas exchange - more flow means more water moving by and less gas exchange. Turn all of your pumps off for 20-30 minutes and watch the polyps really start to come out - or whatever time it takes.

PE is not a sign of anything. Don't worry about it. Look to color and growth as better indicators of health.

I would only worry if an otherwise normally hairy acropora is all of a sudden not hairy anymore.... or vice versa.

 

[Anxur]

S

Not likely. Corals mostly use their polyps in the daytime for gas exchange - more flow means more water moving by and less gas exchange. Turn all of your pumps off for 20-30 minutes and watch the polyps really start to come out - or whatever time it takes.

PE is not a sign of anything. Don't worry about it. Look to color and growth as better indicators of health.

I would only worry if an otherwise normally hairy acropora is all of a sudden not hairy anymore.... or vice versa.

So low flow = more pe?

Can be possible?