Cyano and nutrients

Radicalrob1982

New member
Hi all. Thanks for taking the time to read this.

Been fighting cyano for about 8 months roughly. Through trial and error I’ve learned that the whole issue must be too high of nutrients and I cannot find any other explanation.

In the past I tried dosing no3 and po4 and kept them steady at 5 ppm no3 and 0.2 to 0.6 po4 approximately for weeks But over time this just made my cyano worse and completely out of control.

Within the last 6 weeks I did a weekly consistent water changes and also bought a tea strainer scoop to remove the cyano mats in between. I was able to get to the point where I only had some left in some dead spots in the tank, and it would take a week even to see the smallest difference in accumulation of cyano. This made me feel that it’s gotta be feeding on any excess nutrients. I was also relieved that I had almost got rid of all of it, and seeing white sand again was at a relief.

Recently took some advice from another reefer saying to increase po4 levels. They said to use chemi clean or another brand of it to knock it back first and then dose po4 up to 0.02 ppm and keep it steady. Since I had it almost eliminated, I didn’t bother with the chemi clean as I tried this in the past but it would only last a few days before it came back. However, since dosing po4 and testing daily over the last week and a half, the cyano is returning with a vengeance again.

My biggest question is how will my tank ever have appropriate nutrient levels if the cyano just uses it all up?

Through nutrient export, I was able to almost get rid of 85 to 90% of it, and it seemed to staying back and not taking hold. But if I dose any kind of nutrients, the cyano just comes back as if I’m dosing cyano steroids lol.

Right now my tank has a light po4 reading but no3 is zero. For now, I am stopping dosing and will continue to do my weekly water changes to get back to my former almost victory.

But I don’t have a solution to ever get the tank to a balanced state

Any help would be appreciated
 

😉
 
I have never figured it out. It comes, it goes. Right now it is gone again after several months of covering everything.
It seems to me almost like having nutrients changing either up or down triggers it. I let my sulphur reactors
take nitrates to zero but removing one and shutting the other almost completely down didn't make it go away again.
I asked my bother in law who deals with it in the Gulf and monitors it from space. The Army Corps of Engineers has no idea what causes it either.
So I dont feel so bad.
 
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