Idea for cooling res.

[Doyu]

I read a thread where someone said they put a frozen 2 liter in there res.

Also not a bad idea...would it be ok if temps fluctuated? Like what if I didn't bother one day or went away for the weekend, would it stress the plants? I suppose temps in nature change all the time but I'm just learning hydro...not sure if it matters.

-Doyu
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Everything I say is a lie or copied from another source and is purely for entertainment.