Hiyah, turn off the air-pump (use a timer?) during day-time and problem solved leow. :D Nothing beats changing water regularly though, not only to reduce the intensity but also to rid toxic stuffs that are present and not removed by algae.

Yes, like I mentioned before, we don't know how much ammonia your bb will consume. Hence, bio-filtration is not a good idea. It was a idea posted by bro vix but, for once, he had a bad idea lah. :mad:

heng manz... it was not an idea but a challenging question.

still the presense of nitrite and nitrate are detected... most prolly BB can be found on biofilm on the surface of the boat. but if the levels are low i do not think that's any cause fo alarm.

ya lah, can use timer lor :)