I know there's a million threads on diatoms, but here's another. Do they really disappear on their own? I set up a new tank ~3 weeks ago and the diatom is booming out of control! Plants grow well as they pearl, but they are smothered in diatoms. Every source I found on this says they go away on their own, but this is really hard to believe.
20 gal long (12" high)
Finnex Ray2 (9 hour split photo period)
EI weekly dosing (50% wc sunday)
Pressurized CO2 (~30ppm)
Aquaclear HOB + powerhead
Plants: hydrocotyle sp japan, dwarf baby tears, dwarf hair grass, cabomba, rotala macranda, rotala rotundifolia
I started double-dosing excel couple days ago. Also added the two rotala stem plants a couple days ago.
I also notice some hair algae on the dhg, and green thread algae (dhizome?? spell check). Most of the green thread was on the driftwood, I removed that piece entirely. But majority of the algae in my tank is definitely diatoms