Amazon Milky Death

[Mthood91]

I've had two amazon milky's in a 18x18x24 enclosure. I was using 13watt 5.0 compact uvb, which I recently upgraded to the 26 watt for a second one. A light for plants I got from the biodude that is great. Got terra flora substrate and other mosses from the bio dude. Their water dish is a natural seed pod. good amount of plants and decaying matter with isopods and springs tails. My two guess's of death are the heat? or mites. I found some mites on the very quickly eaten apart frog. Concerning traits would be, skinny and not growing(I thought I wasn't feeding enough but that really is not the case at all), lethargic the past up to a week(not sleeping on top leaves during the day), and they really didn't want to leave the water area, one guy(the survivor) would stay submerged. They get two heavy mistings. Two weeks ago they were up every night and up on leaves during day. They were patting each other on the head last night almost seemingly like one of was letting them know if they weren't ok So lethargic, skinny, not growing, and not sleeping on leaves(only past week), and the mites that were on dead body..I cannot see any at all in tank(SOO many spring tails). At this point I'm leaning more towards the heat not being high enough lately..I made sure the coldest part was never below 68-69 at night, and if it was that temp i was turning on the heat in the room. I thought the top near the lights would be perfect temps for them but maybe it just wasn't enough. prolly around 74-79 the past week. It got much colder outside so that could have effected them. Ill attach some pics of the frog and the enclosure. I actually put the frog back in the enclosure to see if I can fish some mites on it. I put the other frog in another tank. Got heat on him with the uvb, jus a vine and some substrate and crickets and fat water dish. He really perked up, got out of the water after soakn and is perched up on the edge of dish looking well.

The tank was ripped apart a bit after the whole dilemma happened*