What is your biggest question about growing cannabis?

[AAyazlovasky]

Ive got a a problem with my air conditioner in one of my grow rooms. We have 24 lights. lots of fans and the air handler fan running still. How long do I got without cooling before the plants are destroyed?

[golfnrl]

What is the temp without the AC? What stage are the plants? Different strains have different tolerances for heat. What are you growing?

[golfnrl]

85 F is at the top of the range for veg and 80 F for flower. I'd watch the plants for problems. Is the RH high?

[AAyazlovasky]

Temp is at 85f. One room is veg and one room is flower. Both hybrid strains

[Bluey]

Focus on reducing flower room Temps....21/22⁰C appears ideal for Indica heavy strains whilst sativa seem to prefer it a couple of degrees warmer....end of flowering temps of course....you slowly reduce from veg till you hit those temps about 3 weeks out from harvest, or there abouts.

[Trichome1959]

I’m wondering how (if) you will be mixing nutrients for bottom feeding (PPM / EC). Will you keep the bases filled with a full amount of nutrients every day, or dilute the mix and spread it over 7 days, or use 1/2 strength every 3-4 days and just pH water between feedings?

This grow I’ve been mixing the weekly amount, every 7 days (full mixture once per week) with enough to fill the base (5.5L), and using water, plus one additive in between feedings, like Cal-Mag during veg, or a different additive from the recommended nutrients, for that stage of growth. I refill the base daily with pH adjusted water (pH down).

This is the best my plants have ever looked - although I did overfeed at one point as evidenced by the burnt tips.

I started bottom feeding with ACI self watering bases, on my last grow - and it’s a game changer! I grow in 5 gal fabric pots and use Roots Organic 70/30 coco mix. I also have the full lineup of Advanced Nutrients - and follow their ‘Bud Labs’ app for the formula / feeding schedule.

The last grow I kept the bases full of each weeks nutrient mixture, so the plants were being fed daily… and I went through a lot of nutrients, and the plants were over-fed - but I still got a good harvest.

Since I started growing 2 years ago I’ve always had nutrient deficiencies or toxicity… except for this grow!

I was using RO water, but this time I’m using well water (straight from my well, before it is treated wby the water softener). My well water averages 330 PPM.
down to the last 2-3 weeks before harvest on the current grow.

Since my well water provides a low amount of PPM/EC in between feedings, it seems to be working pretty good. But I wonder if I shouldn’t give 1/2 strength every 3-4 days instead?

I also doubled up on the ACI self-watering wicks… I run one end of all of the wicks into the center, and fill all of the holes with the other ends… so the wicks are doubled up and have both short and long wicks side-by-side. My thought is that there’s better coverage and provides more uptake. So instead of just four wicks I have 8 total. It works great!

I clean the bases weekly, because the Advanced Nutrients have some kelp based nutrients that leave residue in the bases and the wicks get kind of dirty - so I scrub those too.

I never top water / feed once I start bottom feeding. My ‘flush’ consists of the just water for 7 days after the last full feeding, then 7-10 days of Flawless Finish, before harvest.

This is Green Gelato from RQS @ day 84.

PS: I’ve been getting your newsletters since 2013 - 10 years before it was legal in my state. 2 years ago it became legal and I started using all of that information (and your site) to grow some really good herb! Thank you - thank you - thank you!!!

[Bluey]

Well done.

Its a good idea to allow them to feed at all lights on time in hydro. Your well water contains essential elements and this may have helped. Also topping up cal/mag between changing out the nute solution helps right up to flower as they are typically the first elements to run out before the solution change.