Sep 18, 2019 · As the title says, how close is this chart? And is this what we should all be aiming for. For a perfect environment? Anyone here specialised on this subject that could give me and others a more in-depth knowledge about the subject. Thanks Green :tiphat:

Dec 4, 2022 · I go by that VFD chart and try to stay between 1.10 and 1.00 with the AC Infinity 67 controller. The problem I have is lights out and then it will go high, I limit to 75% before the fan comes on. If I try to maintain a 'proper' VFD RH at 65F or so then it will just run full speed and never hit the target.

Jan 24, 2025 · Think of plants grown outdoors, the VPD changes drastically on a daily and sometimes hourly basis. Landrace cold climate strains and warm climate strains have different preferences, but most strains are nowhere near pure anymore. Cannabis can handle a huge range of conditions and still thrive. Use the VPD chart as a guide, not a bible.

Jan 8, 2022 · Everyone seems to talking about VPD so I have a question. I am a old school grower and have always been taught your going to get you best Veg growth around 80 deg F. In my small grow room in the basement I have a 600W HID fixture and some supplemental heating to keep the temps at 80 deg during...

Sep 18, 2019 · I used to run co2 and aim for the vpd values and I struggled terribly for a couple years. Then my brother bought a tent and grew better weed than me with nothing but an exhaust fan on 24/7. After that I saif fuck vpd, idled my co2 burner and put the environmental controller on constant exhaust...

Mar 18, 2024 · - Environment: Optimised in terms of VPD. No CO2 supplementation. - Nutes: Floranova bloom nutrients @ 1.5 ml per liter, which gives an EC of only 1.2. To note, this formula is more or less equivalent to H3ad nutrient formula for coco. Using Floranova as I do not have access to the Flora line.

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Feb 24, 2017 · I'm dialing my room now for VPD and CO2 setup. Your flowering settings is roughly like my ambient tropical environment 78low/86high with 60%. Anyway, I believe those settings in your chart correspond to a "safe" healthy transpiration VPD value of 1±0.2, which is more suitable for vegetative growth.

Jan 10, 2010 · Just thought I'd post this here. For all those people saying VPD don't matter, well it sure did for me. I chased my tail for 3 weeks, concocted about 50 different nutrient recipes on different plants, different PH, sat and stared at root balls for 10 mins and freaked out when I …

Jan 12, 2017 · Could someone with knowledge in this area chime and let me know if its okay to grow via VPD chart in a perpetual flower room. My room is setup so I can keep whatever temps and humidity I need (also using co2), I would like to grow via the VPD chart (low 80's temps and ~75% humidity) but I am...