Knowing when to water can be hard when you first start out , it was for me , then I got one of these it was the best thing I ever got .
Knowing when to water can be hard when you first start out , it was for me , then I got one of these it was the best thing I ever got .![]()
Hey dude! I gather, you mean 80F, and 21%RH? Those combined are taxing the plant,... 80F is okay usually, but with low RH it puts significant water stress on the plant,... you don't want the plant to be getting blown around either, that also really pours water stress on it,... a gentle breeze across the foliage is best,... getting the RH up will be very helpful, either with a machine, or even hanging a wet towel in there will bump it up some,... Sounds like you have a small probe type pH+moisture meter? Those are notoriously unreliable, as you've seen with the moisture reading! :slaps:--pH is no better,...I know, I've tested a few of them against an Accurate 8 pH soil probe,... no comparison! .... don't water if the soil feels nice and moist still,.. don't want to saturate the soil (this smothers the roots, messing with gas exchange),....hold off a day,... your finger makes a decent probe too,..poke down a couple inches or so, and get a feel for what it's like... I know it's beating to control heat with an HPS lamp, unless you have it fully enclosed and ducted,... even them the heat is significant!.... Light hours is a source of great contention, but most of the growers I know here find 18/6 or 20/4 to be best,... many find little difference between 18/6 and 20/4,... so, maybe consider shifting to an 18/6 schedule if heat and RH issues become overly difficult to manage,....