Hi there!

I recently became the proud mom of two bullfrog (I'm assuming American) tadpoles, Froggert and Froggle. However they haven't developed at the same rate. Froggert is a full frog, whilst Froggle has developed his back legs, and is on his way.

I had to lower the water level for Froggerts sake, and I recently purchased a turtle dock so that Froggert could have more dry land whilst Froggle continues to develop. However this meant I couldn't really use my filter like I was when they were both tadpoles.

I've been testing the ammonia level, as I also have a 33 gallon fishtank, and find that the ammonia levels get quite high. Water changing tends to stress them both out. They're being kept in a 10 gal aquarium with stone substrate and a large piece of driftwood.

Tonight I raised the water level to get the filter going again, but this makes for a pretty much aquatic environment for Froggert.

So,

1. Because Froggle has his back legs, should I be concerned about the water level still being high enough for him to swim unabated until his front legs pop out?

2. Is it time to change the tank to more coconut detritus and mossy landscapes vs. stone? What is the most ideal substrate for bullfrogs?

3. Froggert doesn't eat well, and has eaten some mealworms, but crickets keep drowning before he notices them. What are some options for food until I can lower the water level?

I acquired these tadpoles from Pet Smart for free, without really the knowledge on how to care for them. I'm going to keep them, not release them as I don't know where they came from.

Any and all advice is appreciated! I know the frogs will for sure!
thanks!