Please help! Tank has been fine till this week! Monday my clown loach Wednesday my bala shark. This morning my Senegal bichir and albino Senegal. They donāt have ick. They look a little discolored. The normal Senegal has 2 large lumps in her belly (hoping it wasnāt gravel , which Iām switching today as we speak) but even if she ate 2 pebbles it wouldnāt explain the other 3? I got delivered the wrong strips so I havenāt been able to test for chlorine or ammonia , they were a little discolored. Could it be chlorine or ammonia burn? I bought new sand substrate. Buying an air stone to maybe help with having 4 plants in there and to give movement to the other side of the tank.