Hi, can you help me please?
I believe this is BGA, am I correct?
I was advised by my LFS to fill the tank up and try to siphon it out, but after an inspection just now, I don't think that's going to happen. I tried to wash a sample of the gravel under the running tap which didn't shift much, I had to pick/scrape it off with my tweezers. It's like a slimy dark brown/black/green mat which is across about 80% of my substrate.
The tank has been going for 2 months using the dry start method (sealed with occasional misting).
The plan is to fill and heavily plant in the next few days. Is there anything I can/should do to tackle this algae mat before I plant up and fill?