New Grower Sweet Seeds - First LED Run!

[pop22]

Day 39

I'm fighting a losing battle against the dreaded condensation! I've got the dehumidifier running 24/7 and it's definitely doing it's job, but after each watering i'm seeing the RH rise up to over 75% and still getting a few drippy walls on the tent, although it's not as bad as before. I've tried to balance out the temps for lights on/off by setting my heating to come on when the lights go out, and the difference is less than 10 degrees now. I guess they are just a pair of proper sweaty ladies! The next weapon in my arsenal is silica gel, which is on order right now.

This one is getting fatter by the day - still at 27.5" tall and not growing any more. Starting to get some frost too!
She's a stunner:


This one is getting lanky, currently at a lofty 30" tall. Big bird. She's skinny and behind her sister growth-wise. She's now on full strength feed along with her sister and seems to like it!


Side-boob action shots:
(Dehumidifier at the bottom)




Tops:



Group shot:


Until next time,

Peace
NB

If your having that much condensation problems and RH build up in the tent, then you don't have enough ventilation. Di you run your exhaust fan during lights out? If not you should, it will help to keep the air moving. I'd add a second oscillating fan mounted high and blowing down on your plants. I'd say the the fan you have down low isn't moving enough air around because its blocked by the plants.

 

[MikeyB420]

I'm taking readings from canopy level and also above my lights (actually the hygrometer is sat on top of one of the LED units).

May I suggest you place your RH meter in this sort of area?


Works for me! Above canopy, below light!

PAL

MB.

 

[pop22]

Axial flow fan? Like a pancake fan? The cfm rating on them is first optimistic ans second, they are not efficient at drawing thru or blowing into any kind of tubing/ducting. This is why the "can fan" type fans are used, they are designed to be able to work against airflow turbulence / air path restrictions and resistance. With good airflow thru your cab, you should not have this problem.

 

[NuteBurn]

I'm wondering if that extraction fan is underpowered, particularly since your room RH isn't high. The difference between my outside (room) RH and tent/closet RH is only 7-10%, which I attribute to my extraction fan pulling a lot of room air into the enclosures. My fan is rated at 280 cfm, so its pulling a shiteload into the enclosures..

I'm thinking the same man, my readings are just like yours inside/outside of tent. New extraction fan research has begun!

May I suggest you place your RH meter in this sort of area?
View attachment 397388

Works for me! Above canopy, below light!

PAL

MB.

Yeah man, i'll shift one of my hygrometers to roughly where yours is and see if my readings change!

Axial flow fan? Like a pancake fan? The cfm rating on them is first optimistic ans second, they are not efficient at drawing thru or blowing into any kind of tubing/ducting. This is why the "can fan" type fans are used, they are designed to be able to work against airflow turbulence / air path restrictions and resistance. With good airflow thru your cab, you should not have this problem.

This is my current extraction: http://www.blackorchid.co.uk/products/extractor-fans/axial-flo/

Thanks for your input mate, i'm looking into getting a more powerful extraction fan and another one to blow down on the plants from above like you suggest. I tried having the extraction both on and off, and it definitely makes a positive difference when ON, so it's running 24/7 along with the air-movement fan inside the tent.

Do you reckon if I attatched my extraction fan directly to my carbon filter i'd have more joy?

 

[Waximus]

Axial flow fan? Like a pancake fan? The cfm rating on them is first optimistic ans second, they are not efficient at drawing thru or blowing into any kind of tubing/ducting. This is why the "can fan" type fans are used, they are designed to be able to work against airflow turbulence / air path restrictions and resistance. With good airflow thru your cab, you should not have this problem.

I think pop is right on the money. I use a pancake fan to extract my closet, but also push fresh air in at the floor level. That fan is rated at 118 cfm, but I don't think its even close.It only works for me because the large extraction fan is pulling out the room air at an adequate level. I agree that a can fan, with over 200 cfm, would cure yer ills, NB.

 

[Waximus]

Do you reckon if I attatched my extraction fan directly to my carbon filter i'd have more joy?

I'm a believer that a fan is most efficient pulling air out, rather than pushing it through. I say have your extraction fan at the end, or close to, the ducting, so it can pull the air. Also, fewer turns/bends in the ducting will keep from air obstruction, keeping the fan as efficient as it can be.

 

[NuteBurn]

Day 41

I'm starting to get a handle on this RH issue - i've been reading up on this forum and it seems that some growers actually feed/water their plants every 12 hours or so (smaller amounts each time) and they have some success. So i've started feeding/watering every 12 hours or so and the RH is staying closer to 60% now. I've also ordered a new duct fan, which is meant to offer better performance against the resistance of the carbon filter. I also ordered another clip on fan to blow down on the ladies from above.

What ya know 'bout TRICHOMES?? The frost party has started!!

Peace
NB

 

[Trapper]

Purple Sati-dom...good combo

 

[NuteBurn]

Day 43

Went to give the girls some feed tonight and took my camera along with me for the trip.

This is fatty (28" tall, purple flowers, and smells like toffee-coated Skittles!)

This is skinny (she's a leggy blonde, 33" tall, and wears orange-scented perfume!)

I wonder what i'll grow next?

Man I love my hobby!

Peace
NB

 

[Trapper]

Tough call...I'd be tempted to go HBSS