I have a 20 gallon tank
8 hours a day.
Nitrite 0ppm Ammonia 0ppm and Nitrate 0ppm (really. I think it is because the plants are eating all the Nitrate and I don't fertilize)
I have a Fluval 204 (180 gph
) and Aquaclear 30 (150 gph
(really?) )filters running.
I have sponges, filter floss and ceramic media in both filters.
My water is really, really clear. And there is a lot of current. Not to say there aren't dead spots but there is a lot of current.
There are lots of water changes happening.
Feeding once every other day.
So my problem is I have this Cyanobacteria problem. It used to be just on a piece of driftwood then it spread to the substrate and plants.
I've tried to scrape brush and vacuum it off and up which got rid of most of it which was vacuumed and filtered, but now there are many more small patches all over the place that are starting to grow.
How can I get rid of it?
Has anyone tried erythromycin?
I have read the articles section here.