The question now is which is the best beneficial bacteria to add for 1year 9month old 29g tank?
I added the UV about 3 months ago. GHA was non-existent, a few strands here and there. Nitrates were 1-2ppm, phosphates 0.01 - 0.03ppm. I started seeing GHA growth increasing and have been scrubbing with hydrogen peroxide at weekly water changes, killing 1 small alveopora. In the past few weeks, nitrates were near zero (~0.2), phosphate also near undetectable with Hanah test (0.00 or 0.01).
So I'm concluding that the imbalance in GHA favor must be caused by the UV killing the beneficial bacteria.
I added the UV about 3 months ago. GHA was non-existent, a few strands here and there. Nitrates were 1-2ppm, phosphates 0.01 - 0.03ppm. I started seeing GHA growth increasing and have been scrubbing with hydrogen peroxide at weekly water changes, killing 1 small alveopora. In the past few weeks, nitrates were near zero (~0.2), phosphate also near undetectable with Hanah test (0.00 or 0.01).
So I'm concluding that the imbalance in GHA favor must be caused by the UV killing the beneficial bacteria.