Hoping for some guidance on my next step here.
Basic specs.. 60P with pressurized CO2(ceramic in tank diffuser), Eheim 2211 with stock inflow and outflow, Hydor 240, Beamswork F spec 24inch. Dose 3x weekly with Thrive+ for Shrimp tanks. 33% water changes 1x per week. 8 hour photoperiod.
This is my first ever high tech tank. The learning curve has already been steep and I think I've got a lot of good going on. Focusing first on the upside. I generally have very clear water. The plants are thriving.. I grew a carpet for the first time ever(dwarf hairgrass).. I've got new leaves near weekly on slow growing plants like Buce and Anubias, and even stem plants that I've heard were hard like Rotala Macranda are growing like gangbusters. My fish and shrimp and thriving except for an unfortunate incident where I didn't get all the bleach off the bleach dipped Anubias and sadly wiped out my Amano colony.
However.. I am desperately struggling with algae, first green spot, then dust, and now a big filament outbreak. And lately I'm finding a thick oily film on the tank every morning. I have a couple suspects that I was hoping to get some verification on. Then trying to find next steps. I think my CO2 is varying too much due to crappy diffusers. I have several pollen glass cheapies that I bought on [Ebay Link Removed] I wash and clean and switch them every 3 weeks or so.. but it seems that I'm not keeping CO2 even.. my drop checker bounces around a bit. I ordered a better quality Jardli diffuser that I hope will help with that.
My second concern is filtration. I reused my Eheim 2211 from a previous tank. But I fear its just too small. However due to this darned virus destroying the world I'm in a tight spot to simply upgrade right now. I hoped the Hydor pump would tide me over for a while but the algae continue to be a constant fight.
I've attached some pictures below.. you can see the tank is well planted but not incredibly dense. This is about 3 days after its last serious cleaning
So the followups are this. Is there something I should next be focusing on besides filtration? If filtration is likely my big culprit is there anything to do to help me limp around until money improves? Or do I need to bite the bullet and buy the 2215 with a lily pipe and a surface skimmer?