I do 30% wc weekly. I also use Eheim sludge extractor to clean the gravel, but I haven't touched the driftwood. Recently I've kept my light positioned more in the back and middle of the aquarium than front, thus it must've induced this growth.
Yeah, that spot did not get much flow at all. I bought a small powerhead, there is more flow now. It' can't be too much since otherwise my borellii are just flying around. I got it mainly for my sewellia, he seems much happier now. Also added some stones for him.
I think the wood is mongrove.
I got Easy Life Blue Exit, which I started dosing now for the BGA. I don't even know what is contains (which makes it pretty dangerous to use), but many had had success with it so I'll try it out. I also heard that hydrogen peroxide will demolish BGA, but that also demolishes all the beneficial bacteria so I decided to skip on that. Btw I can just scrape it off or even remove it in sheets or pieces, it comes off very easily.
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