ok my tank is geting a lil fogy but when look at side barly can see to other side (29 gal tank) so i did a big watter change like 40% becouse i did like a 20% about 4 days befor and just got fogy well 1 day after big water change its fogy can any one help me its not my filter (for 20-30g tanks and bran new like 1 week) HELP ME IM SCARED... dont wana loos all my fishies ale:
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