I am about ready to transform my 15 gallon tall into the tadpoles new home. When they get thier front legs they get moved if I am right. The bottom can hold about 3 inches of water. I dont know the best set up for this age of whites.

I was going to fill up the 3 inches with water, put in a small wooden branch from my hermit crab tank (cleaned of course) in the bottom. For the plants I am just going to do a few fake plants, one being the one in thier current all water set up.

Do I need to do anything else, or do something completely different? How soon after I move them will I need to change it to a regular whites set up?