Humidity And Temp

Hey gang, I've got a stealth grow in a cupboard. Best I can do is 50% humidity and 30*C during the day. I'd like to get them lower but short of installing AC in my garage, I don't know how else to do it. Am I likely to get mold problems with those figures?

That's kind of perfect

f series said:

That's kind of perfect

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Oh, ok thanks. From what I.ve read online, I was aiming for around 25*C and 40% humidity. Was thinking of putting another extractor fan in there

I added another extractor fan and bingo! It's 33*C here today and around 50% humidity. Inside the cupboard is 27* and 41% humidity.

Just finished harvesting my litle stealth grow and got 4 ounces, once dried. It's Amnesia Lemon, sativa, and is a very nice smoke. Thanks for everyone's input.

Busternutt said:

Just finished harvesting my litle stealth grow and got 4 ounces, once dried. It's Amnesia Lemon, sativa, and is a very nice smoke. Thanks for everyone's input.

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Nice!
What size cab? Or tent?

50% for anything from seedling to end of veg is perfect. You want that lower once the plant is flowering, especially later. 35-40% is ideal to avoid issues.

As for temp, this is one that is more lenient regarding where you need to be. I have found that 25-30° is actually amazing for seedling and veg stages. Again if you can get that down to 22-25° for flower you are doing well.

50 for seedlings and veg is on the low side 65 75 perfect 75 best 45 50 in flower can go abit lower when buds get fat g temp in veg 26 27 temp in flower 25 26 late flower a little lower 23 24

weed-whacker said:

Nice!
What size cab? Or tent?

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I'm using an old kitchen cupboard. The "grow" area (from the screen to the underside of the lights) is 600 x 660 x 680 (24" x 26" x 27") which works out around 0.27 cubic metres or 9.5 cubic feet. Below the screen is the pot and below that is the reservoir. I made the plant quite sick a couple of times, through inexperience and ignorance, and the grow area's pretty small so I'm pretty happy with what I ended up with. I've done a lot of homework and kept meticulous notes since starting the first grow so I aim to improve on the yield on the next one. I put a freshly struck seed of the same strain into rockwool this evening.

I tried repositioning the ducting to bring the temps down but the figures I mentioned earlier, were the best I could do. We've had some fierce temps here over the last few months and my chiller system was struggling with it. I was surprised at the amount of heat coming off the LEDs too! I'm going to install another extractor fan and have a duct from each extractor fan positioned beside the underside of the lights to remove more heat.