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

EvlMunkee

EvlMunkee

Well-Known Member
I have a question about 400w hids and this looks like the forum to ask.
I have just finished my grow cab and I am fine tuning the lights and ventilation for optimal temps. My original plan has always been to use a 400w digital hps/mh. I don't have one yet but want to get one in the next week from HTG. I am now testing a compact 150w hps for temps. I am able to keep the temps between 70 and 80 (about 5 or 6 degrees maximum above room temp with 2 constant 38-106 cfm exhaust fans and 2 -15-32 cfm intake fans along with another 38-106 cfm that is timed with the lights. BTW, I have installed a humidifier which helped a lot with temps and raised rh from 25% to 50%.
My question is this; HOW MUCH HOTTER WILL A 400W BE? My cab is about 4'w x 6'h x 19" deep. If I absolutely have to, I can change the timed exhaust to draw heat from the flange on the light but I would rather not have to.
Do any of you 400w experts have any thoughts or opinions on this? I would really appreciate any guidance I can get.
 
Hotsause

Hotsause

Well-Known Member
If i am getting a 430w Son Agro Bubbleponic Kit but instead of the 430w im getting this option
(If you would prefer, this system is also available as a 400 watt swichable system, instead of the enhanced spectrum Son Agro. This option includes a 400 watt switchable ballast, a 400W MH bulb and a 400W HPS bulb. Select this option to the left at no additional charge.)

I can put ventilation on my light so i was wondering does my ventilation kit have to be 6" as my light is or can i go with a smaller ventilation kit.Please let me know and in advance thanks
 
MrGhettoGrower

MrGhettoGrower

Well-Known Member
Nothing wrong with 400 watters! My last grow I use 2 of them and my current grow have 3 of them running with 2 three speed fan on 2. Was running 2 old magnetic
all in one units then updated to all lumateks 400! My last grow is on U tube if your bored and watching the grass grow here the link YouTube - MrGhettoGrower
 
MrGhettoGrower

MrGhettoGrower

Well-Known Member
dangledo said:
EvlMunkee said:
I have a question about 400w hids and this looks like the forum to ask.


http://www.hydroempire.com/store/product_info.php/products_id/211

Glad you asked, as I looked these up and found out they now have a bulb for veg!!
I have three, and currently use two. With out the hood, your heat issues are ALOT easier to deal with.
I know ive asked before. does anyone else use these? I seem to be the only one.
Click to expand...


I think of taking my hoods off cuz of height issues. I went to 7 pots and two of are in the 3 weed of flowing and have 6 inches left! I'll put mylar on top! lol what you think?
Click to expand...
 
Integra21

Integra21

Well-Known Member
EvlMunkee said:
I have a question about 400w hids and this looks like the forum to ask.
I have just finished my grow cab and I am fine tuning the lights and ventilation for optimal temps. My original plan has always been to use a 400w digital hps/mh. I don't have one yet but want to get one in the next week from HTG. I am now testing a compact 150w hps for temps. I am able to keep the temps between 70 and 80 (about 5 or 6 degrees maximum above room temp with 2 constant 38-106 cfm exhaust fans and 2 -15-32 cfm intake fans along with another 38-106 cfm that is timed with the lights. BTW, I have installed a humidifier which helped a lot with temps and raised rh from 25% to 50%.
My question is this; HOW MUCH HOTTER WILL A 400W BE? My cab is about 4'w x 6'h x 19" deep. If I absolutely have to, I can change the timed exhaust to draw heat from the flange on the light but I would rather not have to.
Do any of you 400w experts have any thoughts or opinions on this? I would really appreciate any guidance I can get.
Click to expand...
The best thing you can do is air cool the light. It should work fin by having a passive intake or a small fan if needed. Then just hang the light, run duct to it, to an inline fan, then out the cab. With the other end of the light open, it will cool your light and act as your ehaust. This will usually keep your room just a few degreese above the ambient room temp with a 400w light. If you have any other questions, feel free to ask.
 
EvlMunkee

EvlMunkee

Well-Known Member
[
dangledo said:
EvlMunkee said:
I have a question about 400w hids and this looks like the forum to ask.

Glad you asked, as I looked these up and found out they now have a bulb for veg!!
I have three, and currently use two. With out the hood, your heat issues are ALOT easier to deal with.
I know ive asked before. does anyone else use these? I seem to be the only one.
Click to expand...
Thanks for your response guys.
I didn't really think about the hood being harder to cool but you have a good point. The cooltube would be more efficient for temp control. With my "smallish" cab and all the mylar it should still be plenty of light and probably cool as well or better than the open hood that I am cooling now.

Integra21 said:
The best thing you can do is air cool the light. It should work fin by having a passive intake or a small fan if needed. Then just hang the light, run duct to it, to an inline fan, then out the cab. With the other end of the light open, it will cool your light and act as your ehaust. This will usually keep your room just a few degreese above the ambient room temp with a 400w light. If you have any other questions, feel free to ask.
Click to expand...
That is what I was hoping to avoid since my timed exhaust fan is sort of "built in". But when you're right, you're right. I suppose the thing to do is go ahead and reconfigure the one exhaust fan to cool a tube. It runs at 108 cfm but with the carbon filter it is probably more like 80 cfm. That's just a guess, but it moves air pretty well through my diy filter.
I guess I will bite the bullet and fix it now before I get something growing in there.
Once again, I appreciate your help bros.
You have convinced me.


.
Click to expand...
 
hardroc

hardroc

New Member
yea thanks your's has some big stalk on it, nice. Mine was one of my party cup enteries but liked it and vegg'd it out. So whenever I started them that's how old she is I'd say around 2 or a little more. I never write down dates until recently in my grows so I can actually keep track instead of always guessing. just lazy............
 
groputillor

groputillor

Active Member
Cut a couple tops off. They were more than ready at exactly 8 weeks which is awesome. Dry weight will be around 9 g's and 8.5 g's. It looks and smells better than I could have expected. It's a purple kush strain. I have it in another spot that's warm and it still got purple but not nearly like this.

 

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Kriegs

Kriegs

Well-Known Member
hardroc said:
looks good man, bubbleicious is sativa dom? Or are my eye too closed to see right?
Click to expand...
Actually, it's supposed to be 75% indica but, as you clearly saw, I got a sativa pheno. And this plant was partially scrogged - she would've been even more sativa-ish otherwise. I did have a couple males that were more indica.
 
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