I had 2 spots of BBA and did 50% water change and scrubbed all rocks and driftwood.
I also did full cleaning on one of two of the filters, the hob. Then 3 days later I cleaned the canister filter aswell.
Now I clean one or the other every 2 weeks.
Then I got diatoms, just reduced the photo period to 10 hrs and a little glass scrubbing, done. (the nerites I got might have helped too)
So really... so far so good! (I don't want to jinx myself, knock on wood) I have a great community of fish that interact well (opera like at moments).
The rockscape is great imo lol and my plants are flourishing.
A worry is there though.. my fantail is getting big! worried he might start sucking up the lil tetras