Originally Posted by Chris P Bacon
Thanks for the replies guys. The lights are Electric Sky 300s from https://thegreensunshineco.com
Douglas, I am not exactly certain as I have no temp control on the rez so I am assuming that it will eventually equalise to the room in the low 20s. Currently I am having to heat the tent rather than cooling it so hopefully the rez temp will not be an issue.
Yikes, you'll want to be absolutely sure of your res temps. Though you're top feeding, which will constantly supply oxygen to the exposed roots, the roots in solution will have oxygen issues at higher than 20C temps.
Above 18.4C and below 20C at all times, and you'll be great.
Trust me, after 15+ years of indoor hydro (mostly DWC), you don't want to be fiddling around with h202 or other sterilizing methods. Keep the temps accurate and you'll be fine.
Should you find temp control a no-go, I recommend switching to drip through clay pebbles.
They can tolerate up to mid 30'sC
Personally, I flower at around 20C and 15-20% humidity. Absolutely crushes the quality from hot/wet flowers.