How do I keep the water in my 55 gallon fish tank balanced?

pascal

New member
I recently got a 55 gallon freshwater tank. After reading up some starter suggestions I followed through with cycling the tank for 1 week without any livestock in it. The following week I added 12 baby white clouds to get some bacteria going. Another week later I added two Molly's, and that's when my trouble started. One of the Molly's has already died, the other one seems sick too, kinda floating at a 45 degree angle but still swims around.
I'm doing 20-30% water changes once a week, and always add some AquaSafe and EasyBalance at the amounts indicated on the bottles. I also add some all natural Aquarium Salt for freshwater fish.

The problem seems to be my ammonia level, it gets down to "safe" right after I change the water, never down to "ideal" though, but after just a few days it's all the way up to "critical" again.

What can I do to best keep my water balanced and the fish alive? By the way, the White Clouds seem to be doing absolutely fine. Oh, and we have a frog in there as well, just tiny little one.

Any suggestions are much appreciated.
 
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