I have a 20 long setup. I am having significant green dust algae and some thread algae issues that I can't seem to get under control.
I have pressurized CO2. I've been running it at about 3bps. Any more and the drop checker turns bright yellow. However, there is no sign of any distress in the fish. I have a KH of 9 and a starting pH of 7.6. At the end of the day, the plants aren't pearling at all but the algae is and the pH is around 7.0-7.2. Again, if I go any higher on the bps, the drop checker turns bright yellow.
Lighting: I am using a 30" Finnex Planted+ 24/7 HLC over the front and 2 32W 48" T8s over the back. I have tried on top of the tank (10" above substrate) and 13" above substrate. I am running them for about 10 hours a day.
Ferts: I've been dosing PPS Pro for about 3 weeks. My TDS stays right at 100 higher than tap.
I have it heavily planted with Ludwigia repens, Hygrophila pinnatifida, some Hydrocotyle, Rotala ramosior and Eleocharis.
I have an Aquaclear 50 HOB filter for now. I am finding that the flow in the tank is not good at the opposite end of the tank from the HOB. This is with it on the back at one end. I have read that poor flow with the CO2 could cause problems. Should I move the filter to the end of the tank where it flows the full length? I know a canister would make this easier but that is not in my budget right now.
Just not sure if and where the imbalance is and/or what else I can do to take control of this situation. Photo attached to see some of the problem. Any advice would be greatly appreciated.