heat issues

hi i am having trouble figuring out how to get rid of the heat from my light. i have a grow cab with a 400 watt hps/mh light, an ice box and a 1hp chiller and a 633 gph pump. the reservoir for the chiller is in the room that the grow cab is in, and it's about 30 gallons. the chiller is in the next room because it would be adding too much heat to the reservoir. my light has an ice box connected to ducting going from outside of the cab, into the cab connecting to one end of the light, then from the other end of the light to the outside of the cab with a 449CFM fan pulling the air out. my room is pretty warm so it warms the reservoir, even though i have the chiller and ice box. am i doing something wrong? i have heard that 633gph is a sufficient size for a pump for a 1hp chiller, but i have also read that you need a 1500gph or more to get the best results. i am not sure if it would be worth it to buy the bigger pump because the bigger the pump, the more heat created, or is the only way to fix the issue is to channel the heat to the outside. any suggestions? any more info needed to help answer my question?

Solid description, now post pics if you can.
Not everyone's perception is the same.
I am more interested in the ice box > light > Fan set up and pics.
What size is the grow cab/area that you are trying to cool ?

True, good descript. Do you have a fan blowing the ambient air as well? That would drop a few degrees.

so that vent out of your cab with the fan, does it go anywhere else besides the room your cab is in? if not, there's your problem. i'd try to vent it through the wall into the next room/garage/outside. venting the warm air out of the room, preferably outside, will cause negative vacuum in your room with the cab and cause the room to suck in air via all the cracks/crevices.

ideally you'll vent the hot air out of the room and have another 6" inlet to the room from the outside. the inlet duct won't even need a fan since the outlet fan will create enough negative vacuum in that room to suck in fresh air for free.

I'd vent into the attic if possible. I would like pictures as Flo said. I'm sure you would get more feed back as well. Your grow sounds awesome. I love the cooler fan vent idea too. Brilliant. I'm going to see if I can work something like that out. What is the temp? You never mention it. Mine stays around 90F and the DWC stays around 76F. I know thats "hot" and people run into problems, I guess I'm lucky...I don't know. And Flo you are on every thread I see.

oh and BaconPopcorn is right too. It's easier to pull the air than blow it. That means a fan on the outlet is better than a fan on the inlet. I use a little 6inch fan on the in though and a 250cfm fan on the out.

baconpopcorn said:

so that vent out of your cab with the fan, does it go anywhere else besides the room your cab is in? if not, there's your problem. i'd try to vent it through the wall into the next room/garage/outside. venting the warm air out of the room, preferably outside, will cause negative vacuum in your room with the cab and cause the room to suck in air via all the cracks/crevices.

ideally you'll vent the hot air out of the room and have another 6" inlet to the room from the outside. the inlet duct won't even need a fan since the outlet fan will create enough negative vacuum in that room to suck in fresh air for free.

Click to expand...

+REP

rayishungry said:

I'd vent into the attic if possible.......... And Flo you are on every thread I see.

Click to expand...

Into the attic is what I do too.
Heat is going to go there anyways !

Like 'Pac and Digital Underground said, " I get around ! " lmao


.

haha. yeah you do, about everything I see you hit first.

hey flo, i will get pics up asap, just need to find my camera, its around here somewhere lol. the grow space is small- its actually a cabinet in a 8x9 room. approximately 1.5 x 3 x 5.

pwizz- yes i do have a fan blowing inside the cab

bacon- i can't wait to have a house- that would definitely solve my problems and make it cheaper for me to grow, but unfortunately i live in an apartment and my wife won't let me drill holes in the wall to dump the heat lol.

my goal is to have a C.G.E. (closed grow environment) which i have almost achieved. i have had the air from the light just blowing around in the cabinet with the icebox connected to the light and the fan pulling the air through. the problem is that with the cge, i'll need a dehumidifier for the moisture put out by the plants as wells as for the condensation that builds on the plastic tubing that carries the cool water to the icebox , which puts out heat as well, adding to the already high temps in the cab.

temps with the air from the light being sucked out of the cab and into the room are above 90 in the cab. the temps with all the air staying in the cab and the icebox inside the cab are 85 and above. i've read the max temp for co2 enriched environment is 90, but i have also read 85 is the max temp, which i am pushing 85 either way.

co2 would be a great idea for the heat

oops i forgot to say i do have co2 and the CHHC-1 (co2, heat, humidity controller)

With C02 they can take a little heat 85 degrees is fine if using c02.

ok sweet! flo- what does if extraction is up to par mean? are you referring to heat extraction? also this may be a question for a different thread, but does anyone think that if i went from a 633gph to a 1584gph water pump that i may have better luck with getting rid of the heat?

Meaning as efficient as possible, with as few bends (prefer none) as needed.
Pulling, actively or passively, from a cool area outside the grow room and exhausting to an area outside the grow room.
Lights the same way but seperately from the rooms main exhaust.
If you can, mount the rooms exhaust just straight up into the ceiling or straight out the wall.
Just as long as it's up as high as possible and opposite from the intake, which should be as low as possible.

That larger pump may handle/run that rez more efficiently and therefore giving off less heat than the smaller pump working hard like The Little Engine That Could ! lol

boom
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yep that would be ideal but i do live in an apartment so my wife said no drilling holes in walls. do you think it would be worth it to still buy the larger pump since i can't extract the heat? i would really like to get my temps down to 80ish if possible so my nute res temps will go down. i have the hose from the chiller going in through the tops of the bucket lids and back out with a little bit of hose sticking into the water so the cool hose will somewhat chill the nute reservoirs. not sure if i'm explaining that correctly but if that doesn't make sense, pics will be up soon and you can see what i mean. i have this weekend off work so hopefully tomorrow. sorry for rambling lol

first pic is my cab. second pic is of the chiller, which is in the other room with black tubing running from the chiller under the door to the reservoir and the ice box. third pic is the whole cab open. i flower on the left side and veg on the right side. fourth pic is the veg side. fifth is the flower side. last pic is my reservoir with a 633 gph pump in it (debating on upgrading to a more powerful pump, not sure if the $100 i would spend on the pump would make much of a difference though, so i'll save my money for now until i am convinced otherwise), you can't see it but there is another garbage can with the co2 tank in it next to the other garbage can. all the plants are in veg right now, nothing is over 2inches tall yet. i have been using 18 watt flouros for vegging til the plants are a little bigger, then some compact flouros - not sure what size, cool daylight or whatever the bluish ones are. i've been testing the 400 watt lamp to make sure i have everything ready so there is no moving things around after flowering has started- just to reduce chance of stress. i have 2 blueberry, 1 super skunk, 1 pure power plant, 1 kushage, 1 burmese kush. air temps in the flower cab get 87-88 when the hps is running.