I heard of some people do that, but my run-off water is so gross i dont have the heart to run it back through lol. It looks like stuff precips because i let it get a good dry cycle in there. I usually throw it in the garden. I do use humic and fluvic acid though i believe thats why it looks so nasty.
What was your medium? I used Rock wool, perlite, clean gravel and Turface. What I would usually do was watch the level in the res and refill with normal solution and when it got down half way then when it got down to half way again change it. Plus I used Jacks Hydro with some epsom salts added generally. It was cheap but worked pretty good.
Yeah i feel that, i use well water and end up using a good bit of ph down. Thats really the only reason i would ever stop hydro, to make watering easier.
Heat does not make a plant transpire more.. the right VPD does. Heat can hold more humidity, and that can be a battle if you can't control it. Ideally, in flower, you want a 20 point deficit. (i.e.) 80 degrees/60%rh or 85 degrees/65%rh.. veg is more like 10 difference. (i.e.) 75/65 or 80/70.
In the winter it can be hard to keep 80 degrees and humidity is no issue generally, spring a different story as heat becomes something big to control along with humidity.
Totally understand.. it can be a struggle if you don't have the right equipment. But, for reference, here's an interactive VPD chart.
Yep!
But!.. i know this for fact, as I have experimented with it, and if you are spot on in flower at 1.2-1.4 Kpa on the VPD chart, they will drink/transpire like crazy! This means more production, more growth, and fatter/denser buds. I like to drop all levels (temps/rh/CO2) towards the end to mimic Fall. They love to take on environmental cues as what to do.
Just as many people and "studies" to the contrary as well.
Taking clones off the most potent phenotype will also help you to get more potent stuff on your 2nd run
