Hi, I have a 20 gallon tank and my younger brother dumped about half a cup of vinegar into it. We did a few water changes, probably will do more and the fish are OK, but I'm worried it killed the benificial bacteria and uncycled my tank. My tank is stocked with 2 khuli loaches, 3 dalmation mollies, 5 danios, one juvinile sunset gouriami and 2 sparkling gouriamis. It also has a plant. Any ideas what to do?