My 5 gallon NPT is now about 3 months old, and I am growing some algae!
I'm not worried about the green spot algae. I have small quantities of that in all my tanks. But I'm getting a mix of staghorn and hair algae, neither of which I've seen before. They are increasing quite quickly - obvious growth over the last couple of weeks.
I'd like to get on top of the algaes before they get on top of me, if possible. Any suggestions?
The tank is 5 gallon, heavily planted with fast growers and duckweed on top. Everything is growing well, though the anubias nana shows little growth (maybe because the snail keeps pushing it about). Some of the hygros are nearly managing emersed leaves, and everything could do with a trim.
The stock is several male endlers, an apple snail and a female betta. And some tiny caridina shrimp (actually I haven't seen the shrimp recently, and I suspect that the betta might have eaten them, though maybe they are just in the back in the plants).
The tank gets good southern daylight (I'm in Australia, so this isn't as bright as northern daylight) and a bit of sun in the mornings through an east window, maybe 30 minutes of sun in total. I turn on a 13W CF light over it for a few hours in the evening, mainly so I can view the fish, and originally to keep the duckweed growing, though I am not so concerned about the duckweed now that the other plants are getting big and the tank's nitrogen cycle seems established.
Ammonia and nitrite are always 0 now (had a bit of nitrite hanging about earlier, but this has subsided). Nitrate 5ppm, phosphate >3ppm (coming out of the soil, I think), PH 7.2, haven't measured anything else. There is very little circulation in the water, only that caused by the heater.
I would appreciate any suggestions about how to discourage the algae. I don't want to do anything that might risk the plants or fish in the process, though.