So water temp I say ideal would be 77f that means air temps much higher. The reason being is water temps is going to be a huge influence on the plant temps. I'd say 77f is pretty dam as close as it gets to speed metabolism as high as possible. This is an aeroponic cloner so you don't need to worry about higher water temps having a lower o2 level. They have access to as much o2 as they want.What would you say the high end of water temp you could get away with is? I dont know if I will get away with running my turbokloner over the summer. I have a on/off timer set for 30 seconds each and will probably rotate frozen bottled water out when I remember
Even at 80f they should be fine. With hydro I run 72-74f I find this to give the fastest growth rates and greatly faster than 68f. The difference is what you see in overall plant temps. The only drawback is while it increases plant metabolism it also increases bacteria metabolism and the reproductive rates increase immensely so you need to stay on top of it. It doesn't cause root rot like many say. I think I may make a write up on all this as there is a LOT of what I call misinformation or bioscience on it.
So warmer temp faster growth, more important to run live systems or increase the frequency of treatments for sterile (this is majorly important I can stress how much it increases reproductive rates of bacteria) sterile treatments don't stay in the water like live systems. H2o2 treatment is prob gone within hours if addition but it knock the population down very low then you treat every few days to keep knocking it back. So when the reproductive rates increase you should be doing evey 2 days at least.