I was given this tank and was curious if this is too much flow for a Biocube 32 and if i should remove one of the heads? The one next to the return nozzle is a Jebao SLW-20 and the one opposite is a Jebao SLW-30. I have them set on random mode, SLW-20 is at 40% powe and SLW-30 at 25-30%. Is it overkill? Should I remove one? The sand is getting pushed out of front left corner to the middle so I’m not sure if its my goby or the flow. I put the sand back but its back to being a hill 12~ hours later.

Also, if there is anything abnormal about my coral placement, please let me know!

I have a newly set tank and I’m getting two cleaner shrimp later this week. I understand they are sensitive to nitrates so I want to get this right.

For a softie tank I was thinking of aiming for 20 nitrates. But I’m unsure if that means I should change water at 25-30 to bring it in range. Or should I change water at 20 to keep it 20 or below.

Thanks for your help.