Cyano bloom, 3yr old tank

[Biff0rz]

I'm in the middle of a cyano bloom, it's getting worse daily. It started after I did a water change and the following week I cleaned out the sump. I did a water change 3 weeks ago, went well. Nitrates went from 15 to 10. I then cleaned the sump and nitrates have dropped like crazy and the cyano is building fast. Last week nitrates were at 7, cool. This week 2.9. I dosed back up to 10ppm with some sodium nitrates. Corals overall seem happy but today the cyano really took over. Besides 'wait it out', I was considering doing a chemiclean treatment in a week or so along w another water change. Is it fairly common to get cyano in an established tank? It's pretty bad. Like uglies bad lol.

 

[Dan_P]

I'm in the middle of a cyano bloom, it's getting worse daily. It started after I did a water change and the following week I cleaned out the sump. I did a water change 3 weeks ago, went well. Nitrates went from 15 to 10. I then cleaned the sump and nitrates have dropped like crazy and the cyano is building fast. Last week nitrates were at 7, cool. This week 2.9. I dosed back up to 10ppm with some sodium nitrates. Corals overall seem happy but today the cyano really took over. Besides 'wait it out', I was considering doing a chemiclean treatment in a week or so along w another water change. Is it fairly common to get cyano in an established tank? It's pretty bad. Like uglies bad lol.

I would say cyanobacteria in older tanks is not common, but the chances of a bloom are never zero.

I doubt that a water change will do much, sucking up the slime as often as possible is a step above waiting it out. Be disruptive to the mats as often as possible. Chemiclean can help. Many aquarists swear by it. A few swear at it because it seems to have hurt or killed something in the aquarium.

 

[rockdiver]

Any update on this ? I also seem to be having an issue and was thinking about using chemiclean