my friend had an established 240 gallon tank for years, then one by one all the fish died. after one week without fish, the tank was tested. all levels were fine. even before and after a 50 % water change. he added 6 african cichlids to the tank. within 2 hours they all had died. is it possible one of the heaters could be electrocuting the fish when it kicks on? what else could it be? please help.

Thanks for appreciating my tirgers. my NGT eats well.Wow very nice. But you really took a risk with that NGT being so skinny. Is he eating yet?
+1 on this. agree.fish wont get short by the electic,tell your friend clean the whole tank,cycle awk then keep fish,lazy will cus u alot of problem.![]()