trying to lower humidity in a cabinet

I'm mid flower with my propogator grow using DTW with coco and daytime c02 in a temp zone around 29c most of the time and it's going well with a horizontal LST style single plant grow. I';m noticing it can get near 80% sometimes at lights out when the heat drops around 5 to 8c lower, i've not had high humidity problems before but I've got to keep an eye on it and get it down if i can. My prop is inside a 4x4 tent which the prop regularly takes air in from so the best I can come up with is a decent sized dehumidifier in the (outer) grow tent which helps a bit but nor much. Wlith daily fertigation and the relatively sealed nature of a propogator it's a challenge to keep lower than say if it was a grow tent which was dealt with by the dehumidifier.

Anyone here had success with getting their humidity down at night without opening the cabinet up guys?

bodderz said:

I'm mid flower with my propogator grow using DTW with coco and daytime c02 in a temp zone around 29c most of the time and it's going well with a horizontal LST style single plant grow. I';m noticing it can get near 80% sometimes at lights out when the heat drops around 5 to 8c lower, i've not had high humidity problems before but I've got to keep an eye on it and get it down if i can. My prop is inside a 4x4 tent which the prop regularly takes air in from so the best I can come up with is a decent sized dehumidifier in the (outer) grow tent which helps a bit but nor much. Wlith daily fertigation and the relatively sealed nature of a propogator it's a challenge to keep lower than say if it was a grow tent which was dealt with by the dehumidifier.

Anyone here had success with getting their humidity down at night without opening the cabinet up guys?

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There is a thing called a cold finger. Effective but uses much power.

Move closer to me and never worry about humidity ever again. (cactus photo)

No exhaust fan?

There is a thing called a cold finger. Effective but uses much power.

thanks but I couldn't find a cold finger

Move closer to me and never worry about humidity ever again. (cactus photo)

Lol, well it's a micro climate (my cab) so put it anywhere really and it should be the same environment as it's pretty contained.
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No exhaust fan?

Yeah i have 2, one exhausting the fresh that's being pulled in to keep the temp under my threshold and a couple of pairs of smaller (pc) ones which i could use more than I am I guess, they cycle for 1 minute and off for 10 so I'll halve that to 1/5 and see how the moisture level goes, cheers.man.

On another tip these crystal moisture traps (below) are dirt cheap and some of the smaller ones work for 6 to 8 weeks which is the period I need effective reduction (just flowering) so I'm going to try sticking one in the prop each night and see if that's an easier option. I',m not afraid of high moisture levels of 70 or 80% when it's light time as the high temps and c02 steer towards good VPD zones as long as there' a strong interior fan pushing good air flow round the canopy but i've got to watch it after the lights go out in a prop Im learning.

My setup with front off the prop for picture, (c02 meter on left not calibrated for rh or temp). She's been strapped down and fimmed again and again all the way thru veg til 2 weeks before flipping and scrogging which produced about 40 + canopy bud sites, very little foliage below.

Thats some awesome lst technique you have. -- You start the lst after topping to get the branching and multiply from there I guess?

What kind of yield does that produce? 3-4 ounces?