i have a penguin 200 bw filter it is 12 days old.(new tank) the wheel has been loud since i got it, spinning fast spitting water. i noticed it didn't sound as loud and when i checked the wheel wasn't turning. water was running back into tank around intake pipe. checked everything no obstructions. unpugged and replugged and with a little help it is turning again. it is no longer fast but more of a pause and go.(slow uneven roll). i have noidea how long it stopped turning it seemed to still be damp. this tank(20 long) is currently cycling and bio-spira was used 1-6-07. fully stocked 6 b.s tetra ,6 serpae tetra. readings had been around ; Amm. 0.25- 0.50, nitrite 0.25 to 0.50, nitrate 20. checked around 2 pm today. i just checked and amm. was 1ppm nitrite 0 and nitrate 20. what happened to nitrite and where is all the ammonia coming from?
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