Lost Tarapotos

[Truffs1178]

If the air temp is fine then the temperature of the water shouldn't matter as darts don't spend a lot of time soaking in the water.

[obsidianembrace]

Quarantine from each other? Or from all other animals? They were kept next to my current animals but* all their supplies were different. This particular pair came from the same tank as adults

[obsidianembrace]

Doesn't moving water in a terrarium cool down the air around it? Just like how riverbeds are cooler?

[FrogRN]

How big was your critter keeper? Although the thumbnails are small, they do need a good deal of space (rule of thumb = 5 gallons per frog, min). In this case I would think they were already pretty stressed by being couped up in a little container at the show, then moved to a slightly larger container with a roomate. The final straw was a low spike in temps and a varying humidity. It would be best to have a stable environment for them. They are usually pretty good at tolerating acute drops in temperature (moreso than high spikes). I think everything together was a little too much. However, don't give up.
BTW, I would strongly recommend you avoid in tank heaters. The thermostats on them go out more often than not and they can cause big temperature problems. Again, stable is more important than a little too cool.

[DigitalPunk]

Sorry to hear about your loss

I heat both my frog tanks with an Aquatic heater only (no other heat source). No issues so far and the heated water actually helps with the humidity. Just need to keep an eye on the water level and make sure it doesn't drop to low.