Heater in ATO reservoir ?

BL1

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I think I know the answer to this, I just want to make sure.

I'm using an old 10g tank in my stand for an ATO reservoir, do I need to put a heater in there?
 
Thanks Biff, that's what I was thinking too (it's only going in through a small airline hose). I just wanted to make sure before I messed anything up
 
I add my top off water at to the tank at room temp. Probably half gallon to one gallon a day. It isnt going to effect a 30 gallon system that much.
 
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