Kind of odd for it to start cycling again as it was already cycled
before the bloom.

Did anything happen that might have affected the biological filter? Dead fish
or snails, medication added to the tank, food you don't usually use, plants
pruned severely, power outage, new fertilizer, etc.?

Unfortunatley, funds are
tight, so a UV sterilizer or a diatom filter are out of the question.

It might be best to just let the tank alone. Let the biological filter
re-establish itself, and the problem may go away on its own.


Leigh

http://www.fortunecity.com/lavender/halloween/881/