I'm sure most of you are wondering what I am trying to accomplish here... 
I used to keep aquariums before but I've been away from it for a while. Right now, I'm not quite in an ideal situation to begin but I'd like to start small. I know I have to move again hence I don't want to start populating big tanks yet. May be 15G long for a single species and 10G for frys. Also, the location is a big problem - warm water is very far away but cold water is very close to the tank. Hence I was thinking of simply collection cold water, let it sit over night so that it reaches to room temp, and a bit of help from the heater, I figure it will be ok. If chlorine dissipates during that time, even better! But as some of you suggested, I think I will use the prime, just to be safe. They don't cost much anyways.
I wish if I could setup tanks close to the normal tap and start using Python again, but I think I'm still about 8 months away from that environment...
As you can see, I am desperate to get back into this hobby again. 

I used to keep aquariums before but I've been away from it for a while. Right now, I'm not quite in an ideal situation to begin but I'd like to start small. I know I have to move again hence I don't want to start populating big tanks yet. May be 15G long for a single species and 10G for frys. Also, the location is a big problem - warm water is very far away but cold water is very close to the tank. Hence I was thinking of simply collection cold water, let it sit over night so that it reaches to room temp, and a bit of help from the heater, I figure it will be ok. If chlorine dissipates during that time, even better! But as some of you suggested, I think I will use the prime, just to be safe. They don't cost much anyways.
I wish if I could setup tanks close to the normal tap and start using Python again, but I think I'm still about 8 months away from that environment...

