Planted Tank Enthusiast
Join Date: Feb 2012
Location: Edmonton, Alberta
It's like a second skin but slimy, BGA or something else?
My newish 33 gallon developed a skin of slimy green algae while we were away for a week and it's been hanging on for 3 weeks and I'm tired of scraping it off and hoping it'll go away.
- primarily on the glass with a little on the substrate and plants, but only near the main outbreak on the glass.
- easy to remove and comes off in sheets with a razor and when it floats through the aquarium it looks like mucus and you can pick up the strings.
- does not have a strong odor, maybe a slight hint of plants/fresh vegetable matter
- dark green in color
It's got some characteristics of BGA but no funky smell and doesn't seem to behave the same as previous BGA outbreaks (previous episodes were characterized by creeping across the substrate and plants more than the glass).
I believe I've got pretty good flow through the aquarium, my plants gently sway with the flow in the effected area, my drop checker is in the green to yellowy green area with no reduction of slime.
I'm using a 2 bulb T5HO, keeping it on for about 7 hours a day, down from 8-9. It is on a timer so I don't think it got left on while I was away.
I know photos would help but my wife just scraped the glass so I'll have to wait a couple days for it to return, but should I just try a blackout for 2-4 days instead of waiting?
Do you want any water tests done to help diagnose?