I have brown algae in my tank, which I believe is diatoms. It rubs off easily, but it is on every surface! My 3 nerite snails can hardly keep up with it. It's annoying when I have to rub algae off my camboba (or myriophyllum.. idk which one it is) every 3 days.
The tank has been running for almost 3 months.
10 gallon tank, divided for 3 bettas
no ferts or CO2
photoperiod- about 12 hours+
plants: amazon sword, rosette sword, and what Petsmart calls "Frill" (I think it's either Camboba AKA fanwort, or Myriophyllum pinnatum).
Ammonia and nitrites are 0. My kit didn't come with a bottle to test nitrates.
inhabitants are 3 bettas, 3 nerite snails, a pond snail, and some tiny ramshorn snails that I hardly ever see (my fish may have eaten them).