400w Club-Show Off Your 400w Pride And Joy

Well ambient temps in the house are usually around 70. I am pumping the hot air into a my attic but what I'm worried about is having air being delivered to my grow room through the attic (away from hot air output). Its cold in the attic and I'm afraid that temps will drop if I pump to much air back into the room, but then I'm afraid that if I dont pump in enough cold air it will get to hot. I think I might just build a hood vent and have the fan hooked up to a thermostat to trigger it if it gets to cold and turn it off if it gets to hot

Good idea!

AND yea dood. i posted then went bak and u posted! hahaa trip shit.

Your not gonna want to pull air from the attic in to your room as in intake. Your just gonna be zeroing out your exhaust. Pull in fresh air from the bottom of the room. Remember hot air rises and the cooler air falls.

zeroing out my exhaust? The attic is ventilated so i'm not to sure of what you mean

not sure if he expressed it correctly, but an attic intake is bad just because the temp up there varies greatly on a daily basis. In winter you have temps anywhere between 20F-60F and in summer anywhere between 75F-120F which will cause major problems maintaining a warm enough temp in winter and even bigger problems keeping the temps down in summer. Personally, I would use the exhaust where you have it but hooked up to your light to air cool it and make a passive intake into the room next to it or the basement if you have one. Some people say not to hook the exhaust up to your light, but that is how my setup has been for 9 months now and it works like a charm.

Dr.RR said:

First post in this thread for me! I'm currently on my first grow using HID lighting. I am using a Digital Greenhouse 400W Electronic Ballast. Vegged under Agro Max MH and flowering under Agro Max HPS. Had to use the HPS for half the veg state because my MH blew 2 weeks into the grow. Anyway, here's a couple pics from my grow, 23 days into flowering.

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How far are the tops away from the lights?

Check out my 400w grow on my signature below.

Bout to upgrade my room to have a mother/clone box (light tight) in the bottom and have the flowering plants sitting on top of it, will still have room above to grow plenty tall.

Veg box is going to have a 2ft x 8 bulb T5 and a homemade clone box.

Will be adding a lot of pics soon of the new upgrades.

These were from my last grow in a homebox xl tent with a 400 watt cooltube.The last pic is from the previous grow in my 2'x3'x4' tall box using the same cooltube.The first pics are white rhino and the last pic is a blueberry scrogged.peace.

first day of flowering. 5 trainwreck and 1 random bag seed.

hardroc said:

looking very nice good job, what week of flower are you at?

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Thanks for all the props guys! I've been flowering since oct 31...so they're just starting they're 7th week...Thanks again!

time to show off my white widow. 9 days flowering. the screen has worked out great! 30 tops so far all under a 400W HPS.
Pistles are shooting out everywhere....very exciting!
Started feeding her (alll Biobizz organic range) Bloom, Topmax & molasses (once a week)

Reiss said:

time to show off my white widow. 9 days flowering. the screen has worked out great! 30 tops so far all under a 400W HPS.
Pistles are shooting out everywhere....very exciting!
Started feeding her (alll Biobizz organic range) Bloom, Topmax & molasses (once a week)

Click to expand...

hey man nice setup, the ladies are looking very sexy. I really love to see what we can grow with a 400 watt.
One question though, are you going to cut away the lower growth? I hear it focuses more energy on your shoots that are left and more energy means more bud. I took all the lower growth off my bonzia and it didn't faze her a bit, and now air can move freely under the canopy.
Looking good though bro
keep it real.........keep it green

hardroc said:

hey man nice setup, the ladies are looking very sexy. I really love to see what we can grow with a 400 watt.
One question though, are you going to cut away the lower growth? I hear it focuses more energy on your shoots that are left and more energy means more bud. I took all the lower growth off my bonzia and it didn't faze her a bit, and now air can move freely under the canopy.
Looking good though bro
keep it real.........keep it green

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Thanks. That's only 1 plant by the way.
I'm really not sure about cutting the bottom growth during flowering. She had a really good trim during veg and I think cutting her whilst flowering might cause unnecessary stress.

Hey peeps...
Thought i'd update on here real quick....
Day 18 of flowering....
Big Bang.......
BioBizz Light Mix
BioBizz Grow, Bloom and Alg-A-Mic.....






.G4J.

Looking good Joe. That big bang looks good.

greenfirekilla420 said:

Looking good Joe. That big bang looks good.

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Thanks man,

Reiss said:

Thanks. That's only 1 plant by the way.
I'm really not sure about cutting the bottom growth during flowering. She had a really good trim during veg and I think cutting her whilst flowering might cause unnecessary stress.

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i wouldn't cut anything during flowering.

Here are my oldest girls, under a pair of 400w. They are a little over five weeks in flower. Train Wreck on the outsides, Moby Dick in the middle. They were vegged for eight weeks under CFL's.
The closeup is Moby Dick, she's going to be finishing a couple weeks faster than the TW, I think.

DoeEyed said:

Here are my oldest girls, under a pair of 400w. They are a little over five weeks in flower. Train Wreck on the outsides, Moby Dick in the middle. They were vegged for eight weeks under CFL's.
The closeup is Moby Dick, she's going to be finishing a couple weeks faster than the TW, I think.

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Looking very nice, lots a crystals

Hey guys late to the thread but i thought id update my awsum foursum on ere!!!!