I had one clown loach who has been fine for 2 months since I bought him. I read they needed friends so I bought him 2 friends last weekend. They seemed fine too. This morning they were good, the water is clean the nitrates are low. I think I made a mistake by putting in too much food at one time, because in a period of 1/2 hr the water clouded and they all 3 died. I do not know what else to attribute it to, even though I have always put a lot of food in and it always disappears without issue, today was different. Anyone have any ideas?