Flow and cyano

mavv · Oct 30, 2023

Hi all. This is my 10 gallon reef tank.

Livestock is only corals and CUC, no fish.

After going fishless (untimely brook death of two ocellaris), my nutrients bottomed and I got dinos. I "beat" them by doing a 5 day blackout, after which I started sprinkling crushed marine flakes everyday to try to keep my nutrients up.

I know that you don't really beat dinos permanently, so I kept adding food to prevent them from coming back. All my corals seemed to appreciate the broadcast feed, and all showed signs of growing.

My current problem is cyano. It started showing up in the sand bed, not too bad but noticeable enough that I feel it can become a problem.

I have tried spot treating peroxide on the sand bed; that fixed a spot for a couple of days but doesn't really fixes the problem.

After that, I have tried altering my flow, but all that did was annoy the digitata on top.

My flow consists of a jebao ow-10 (left), set at speed 2 and mode w2 (wave). I also have an aquaclear 50 (right) set at max output.

What would you suggest for the jebao placement and setting? I know that high nutrients are contributing to the cyano but as far as I understand cyano is a nuisance, as opposed to the active danger of dinos. I'm afraid of getting dinos again.

Are cyanos something that I can fix with proper flow? This is my first tank, and I hadn't moved the powerhead since set up until I got the cyano.

Thanks.

Dan_P · Oct 30, 2023

mavv said:
Hi all. This is my 10 gallon reef tank.

Livestock is only corals and CUC, no fish.

After going fishless (untimely brook death of two ocellaris), my nutrients bottomed and I got dinos. I "beat" them by doing a 5 day blackout, after which I started sprinkling crushed marine flakes everyday to try to keep my nutrients up.

I know that you don't really beat dinos permanently, so I kept adding food to prevent them from coming back. All my corals seemed to appreciate the broadcast feed, and all showed signs of growing.

My current problem is cyano. It started showing up in the sand bed, not too bad but noticeable enough that I feel it can become a problem.

I have tried spot treating peroxide on the sand bed; that fixed a spot for a couple of days but doesn't really fixes the problem.

After that, I have tried altering my flow, but all that did was annoy the digitata on top.

My flow consists of a jebao ow-10 (left), set at speed 2 and mode w2 (wave). I also have an aquaclear 50 (right) set at max output.

What would you suggest for the jebao placement and setting? I know that high nutrients are contributing to the cyano but as far as I understand cyano is a nuisance, as opposed to the active danger of dinos. I'm afraid of getting dinos again.

Are cyanos something that I can fix with proper flow? This is my first tank, and I hadn't moved the powerhead since set up until I got the cyano.

Thanks.