So for the past month or two I've been having a problem in my 125 gallon aquarium with floating green algae that I like to call sludge. I'm fairly possitive it is algae and not cyano.
Now, in my smaller tanks I've had that milky white-ish protein layer, but this is most certainly green.
I adjusted my canister filters spray bar to point upwards a bit so there is now surface movement on the left side of the tank. That area now looks far more clear. However, in the center and right side there are floating plants, and thus little to no surface movement.
I attempted to use a surface skimmer, but it gets clogged in a mater of minutes due to all the floating plants. I'm at a loss though on how to get surface movement.
I could use power heads, but I have fish who do not like currnts.
I could use a bubble stone, but I have plants and don't want to drive out CO2. I know that's a bit of an argument though on the extent of how much CO2 ges lost.
Any other options/ideas?
I thought maybe a nutrient imbalance or possibly too much light. For a few weeks I had forgotten to add my liquid fertalizer and I started to get a bit of a green water problem (not just on the surface). Starting up the fertalizer again has fixed that issue, but I still have the floating algae. There is also some hair algae on the driftwood, but haven't seen it affect the plants.
I'm wondering if I should try upping the dose to twice weekly, or if I should reduce the light duration (it's at about 10 hours now, dual T8 6500K, 24" depth). Nitrates are 5 ppm or less.