So Ive got cyanobacteria in my tank. I know the usual causes and they don't seem to be the cause, so if anyone can help me that would be great:
I do weekly(ish) water changes (around 15%), don't have high light (just 2x t8s), have a decent current (exp. where the cyanobacteria is), don't overfeed, and have plenty of plants. It seems to grow mostly on my wood.
1. I use proper pH 6.5 which has a phosphate buffer. could this phosphate be feeding the cyanobacteria? or could my tap water be high in phosphates?
2. I recently put a 6500K tube on my tank. This is a reptile tube so it has increased UV. I thought that the glass top would block the UV, is this the case and if not could the UV be helping the cyanobacteria along?
thanks.