hi ive been cycling my breeding tank for 4 weeks now i washed my external filter out and added the dirty water to the tank aswell as some media balls in the middle of the filter, its near enough cycled readings all peferct and have been for that last week and a half anyhow i noticed these white cotteny bits stuck to the glass filter and heater, there easy to wipe off but keep coming back the pictures aint the best there doesnt seem to be many as ive wiped most of them off but theres still some left in the tank any ideas ??????
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