Summer Worries

Why would it need to be R.O. water in a sealed pop bottle?

 

maybe they are not closed, since a closed bottle might explode. Maybe the idea is to let cold water trickle into the water while also letting it cool off from the sides?

 

In case the bottle cracks and water leaks into the tank. I've never had one "explode" on me but I don't take chances.

 

time to get a airconditioner hehe , for you and the tank

 

I don't want to seem argumentitive, but a soda bottle would explode (burst, actually) in the freezing process, not after it was moved into the tank.

Allow some extra space when you are freezing them, fill only 3/4 full and that problem becomes mute. Do you add straight RO water one or two liters (Soda bottle size) at a time into the tank normally? Seems like a waste to use RO in this manner.
I would also keep a battery air pump and stone handy so that if you loose power and the temp starts to rise, your cold soda-bottle water doesn't stratify in one area. so one part of the tank is sixty, and one part 90.
Just some thoughts

 

Well, I've never filled them 100% so that's probably why mine never burst. I never think to mention that fact so karma to you for picking up what I left off