I just got my axie home and saw she was having trouble getting around on river bed rocks so i took some out and it made the water murky and has been like that for a few hours now. ive done amonia/nitrite tests and they are fine. i was just wondering if you could suggest what could be happening? ive had some feeder fish in there for a week or so. the filter is a gravel one (waiting on bio filter in the mail).