I recently took in a red-eyed tree frog and his 10 gal. vivarium. I would like some ideas on how to set up a **NEW** vivarium in a 20 gal. tall tank as his new home. The new tank already has an Under Tank Heater on it, but I'm not sure if that's advisable to use. The following photos are of the 10 gal. tank the tree frog already has and the last photo will be the new and hopefully improved home. I would need to know from the max type of set up to the minimum set up that can be done. All Natural. I am dumping the log that is already in his 10 gal tank because of the little bugs that I am spotting in there. I would like to utilize all that remains in the 10 gal into the new 20 gal tall, minus the water. The next photo shows the pump with a rock covering that is already being used in the 10 gal. Would a bigger pump be required? This is going to be his new home when it is cleaned and sanitized. The next photo is of some of the extra equipment that came with the red eye and I believe one is another filter and the one with the tubing is for filtering the water. Thank You for your help.