Hi All:
Pretty sure that the "algae" in my tank is cyanobacteria, it fits all the criteria, develops fast, forms sheets, and according to my wife it smells (for some reason I cannot smell it). The photo is from the tank that is the worst. It is the tank I am raising my angel fry in so I am only treating by removing the films every 1 or 2 days. The plants are doing poorly because of the blackout treatment just before the angels laid the eggs, the plants were also not doing well because I let the floater population take over blocking some light.
I do not fertilize or add anything to the tank other than the chlorine water treatment during water changes.
Lights are on timer (7000k balance) 8.5 hours, used to be
On the wood the bacteria re-infested it after taking it out and scrubbing and treating the H2O2. The re-infestation was within a day.
My water conditions are (Frequent water changes due to the fry sometimes daily but usually every second day 40-50%):
pH - 6.4 (my most acidic tank)
NH3 - 0 ppm
NO2 - 0 ppm
NO3 - < 5 ppm
GH - < 30 ppm
KH - < 40 ppm
The only difference between the tap and my water in the tank is the pH drops quickly after water changes to 6.4, it takes about 18 hours for the change to occur. If there is an issue I expect it is from nutrient in the lower sections of the substrate, based on the replacement of the soil in another tank.
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