CRiSPrGrowcommentedweek 66 years ago
@Green420room, ah yes that changes everything lol, first off you're at the correct height, no need to put it up or down from 19/20 maybe even a bit more down like 15inches, but that's clearly not the issue anymore. So the issue is the genetics dont like the environment. basically the plant's metabolism is regulated by what's called the vapour pressure deficit (VPD) for veg you want a higher VPD than for flower, vpd is basically a temperature and humidity thing. so whats happening is the plants dont like the high temperatures at all, and this is causing them to slow down the growth. You want to reduce the temps (bigger exhaust maybe?), and lower the humidity just a bit. Here's a link that explains the concept in detail and provides reference charts so you can check how optimised you are. https://www.alchimiaweb.com/blogen/vapor-pressure-deficit-cannabis-cultivation/
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