Soon I am thinking of changing from my bare-bottom tank to a soil beneath sand in order to grow some plants.

I hand feed my frogs, to keep a good check on their health as well as not wasting any food.

However, is there any risk of impaction with my frogs? I know small gravel is a no-go, but if they accidentally eat sand would it be easy for them to pass it through?
The sand I intend to use is some washed "play sand" from home depot.

Also, if I do not raise any plants, would a bare bottom (save for large river stones) be better? I have noticed they produce a lot of waste and it is extremely easy to clean now. I just worry the sand may add a complication.