Could this be from decaying plant matter? Just did a massive water change and deep clean. I did have two plants (that I now removed) that were dying. I was seeing if they would bounce back.Redshark1 said:It won't be algae but will be fungi feeding on organic compounds which may be at excessive levels.
Just did a massive water change. Never really had issues with my parameters and my fish appear healthy and lively. No change in behavior. I think I may have been overfeeding and there was a lot of dead plant matter around the tank. I'm not sure on how long to keep my lights on.Fashooga said:Looks like brown sludge...is it affecting the flow of the tank? Are the water parameters good and all the fish look healthy?
You probably be best to clean this stuff out with tank water. Get a bucket and fill it with some tank water. Take the filters and whatever and rinse them in the bucket. Pull whatever you can off.
I’m not sure how this stuff starts, while not harmful it is ugly. It might be that your either over stocked, feeding too much or the filter itself might not be strong enough.
I probably would start with reducing the amount of food you feed. Go from there and see if it rebuilds up.