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SCORPIO wrote:BGA appears in the aquarium due to low level of nitrate and slow circulation. It is best to increase the circulation of water and black out for several days to get rid of BGA.

Using antibiotic, you can remove BGA. It will kill bacteria but antibiotic also known to kill useful bacteria. So always try natural remedies to remove algae.

Low nitrates is not the cause of BGA. Low nitrates slows plant growth, which results in higher concentration of nutrients in the water column, which results in BGA growth. It's actually excess levels of trace elements that induces BGA growth.

Best method to get rid of bga is h2o2 spot treatment.
A friend of mine from another forum advice me this:
Take h2o2 in syringe and inject on the algae with NO flow.after treatment let it act for next 1hour.then do it once again WITH flow for another hour.
After that do a 70% WC.
Plants take a hit like when done with glut.
It worked for me.