cooler bubbler & ph question

im just about to build a bubbler system, have been using ebb and flow for years and looking to experiment, and from reading the threads here ive learned that temperature of the resevoir is crucial....in my old setup i kept the resevoir in a remote location so temperature wasnt a problem....well, while at walmart the other day i saw a 30 gallon cooler and thought this could well be the answer to temp problems....i figured if i threw in a couple of 2 liter frozen bottles of water it might just last all day....i dont believe ive seen anyone using one using a cooler on here yet.......just kicking around some ideas....with summer coming my gro room does reach the low 80's.

also with the warmer temps the plants do transpire more water..with this increased uptake, wouldnt that cause huge swings in ph..i can check my gro room twice a day at most and would hate to find my ph at wacked out levels..how would one buffer the ph?
thank you

you are right, the temp of the reservoir is crucial but not indicative of a bubbler system, nor an ebb and flow, or drip system. In other words, your reservoir should have cool temps no matter what system you use. Also, ice / 2 liter bottles are an excellent way of cooling a reservoir IF you have temp problems. Low 80's in summer is not that big of a deal. Your res should still stay in the 75F range and that shouldn't be a problem. Not only will temps cause your pH to fluctuate but your pH meter (depending on what type and quality) will also fluctuate based on the temperature.

There are numerous commercial pH buffers on the market. Visit a hydro store or shop online. They come in crystal and liquid forms.