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Thank you for sharing your grow, nice job! I do have two questions, if you have the time... 1) Day 49 pics show leafs that are cupping and yellowing/drying at the edges... is that from proximity to the light? (Mine are the same, but worse) 2) I see you add 3 supplements to your basic nutes, how...

Correcting bad information I left in message 3. It is not OK to leave your ventilation system off overnight in your grow area, moisture/humidity builds and can cause problems. I just found this out first hand, luckily leaving the blower on constant reversed the issue in 4-5 days. (though I'll...

I've never done a system with a powered intake fan in conjunction with an exhaust fan. Normally (in HVAC) the exhaust fan draws the area into negative pressure and the make-up air is comes in through openings (grills).

I've been doing the 24 hour soak (in the dark) with mine and have had very good results.

Heya RR, I'm a newbie grower, but I am well versed in HVAC design which includes air movement. This is what I have for my areas... Veg - 4" duct attached to the light casing (or just wide open at a high point in your area if you don't have a venting light) Duct travels outside area to a...

Thanks for this thread Blu! I've learned a ton.