Ok so my heater in my 10 gallon tank malfunctioned and I almost had fish soup. The temperature got up into the 90's! I lost my two Peppered Cories but my Glowlight Danios are surviving so far. I brought the temperature down slowly by doing a big water change then got a new heater right away. Then I got two more Cories the next day. When I got up this morning to check on them one of my new Cories had died so I checked my parameters. My ammonia was up to 8ppm!! Yikes. What I didn't realize is that the heat killed off my beneficial bacteria as well and this caused a huge ammonia spike. My pH also went down to 6. I did a 50% water change right away and added some BB and some Seacham Prime. I'll keep my fingers crossed and check my levels again tomorrow. I may have to do more water changes for a few days. I hope my fish can hang in there until things settle down. Wish me luck. If you have any other suggestions to help solve this problem faster please let me know.