I bought my first 2 African Dwarf Frogs about a week ago, and stuck them in with my Betta. They tank had been cycling for about a week beforehand, and the Betta had been in there for a day or two. Everything was going fine, the frogs were eating and hiding and swimming, until this morning I woke up and one of them had gotten caught in the filter intake overnight and was dead. The other one seemed fine and very active today. I unplugged the filter until I can get some foam or cheesecloth to cover the intake, and went to get another frog tonight. But the minute I get home, what do I see? Frog #2 floating at the top, very dead, for no apparent reason! Both frogs(and my new one) were shedding their skin, but I figured since it looked identical to how my turtle sheds that it was normal?
I have the frogs in a 20g tank with an Aqua Clear 20 filter, and a heater but it doesn't need to be turned on as room temperature is about 20 at night, more during the day. The water was treated with conditioner, and the Betta and Siamese Algae Eater seem fine.
Here is my set up(before I started cycling it):
Is there anything I can do to see that my new frog gets a fighting chance?
I have the frogs in a 20g tank with an Aqua Clear 20 filter, and a heater but it doesn't need to be turned on as room temperature is about 20 at night, more during the day. The water was treated with conditioner, and the Betta and Siamese Algae Eater seem fine.
Here is my set up(before I started cycling it):


Is there anything I can do to see that my new frog gets a fighting chance?