Keeping the root zone cool question

uhhh kinda need more info.. aerate the soil, cooler water which also provides a touch of extra O2 into the root zone as well when done correctly. off the hot surface of the outdoors,or buried deeper into the earth for cooling. but indoors,raise it and use a fan with aeration and cooler sips of water through the day. added kelp also helps with environmental difficulties along with other things like life added into the soil and a life tea and/or topping of the pot with good living soil too will help. lots of things lol
 
Itll be indoor grow three girls one sour diesel one pineapple express and one critical soma. I was thinking of adding thos mg crystals in the soil i think its basically the same stuff as whats in babies diapers. This grow will be to see how good mg natures care soil is.
 
I don't worry about soil temps. If your tent temps are OK your soil temps will be OK too. I have had soil temps get high due to no air flow in the grow space but not to the point it hurt the plant. This was early in veg and the plant was close, about 18" from my HPS so the leafs had not shaded the top of the soil from the light yet.
 
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