chucktownskunk
Well-Known Member
i have the same tent and i used a 1000watt hps with the a 6" duct and the room stayed at 77 deg all the time
those need to be separete systems. The air cooling for the light is one system, 200cfm fan blowing air through the cooltube and out of the room. Since it is a closed system, no smell, cheap fan. Now the odor control/intake exhaust system is where you would want to spend your money. The reason is simple, if you don't have a good enough fan to create a slight negative air presssure in the room, you will not have odor control, the air will simply leak out of any opening, 25cfm through a pencil lead size hole. BY creating the slight negative pressure all of the air going out of the room will be drawn through your carbon scrubber, you could even use passive intake for your fresh air ( a hole twice the size of you exhaust line) If you want to use active instead your intake fan need to be slightly smaller cfm than the exhaust, again to create that negative air pressure. Please keep in mind the cfm listed for fans is the output with no flow restrictions. Every bend is a flow restriction and t's are one of the worst there are. Never use t's in air handling lines, use y's just like you use for sewer lines, or take the flow restriction into account. VVwill have to do some measuring tonight.. not sure i could run 6 inch ducting with the size limitations im working with. also looking at adding a carbon filter for odor control. total room size is 42"x44"x7'(or how ever high the ceiling is) as for attic venting ill have to do some more looking up there.. last thing i want is every one in the building knowin what goin down
i use a 400W hps over my 3x3 flood table cooled with a 5" muffin(computer) fan being pulled through about 8' of 2 1/2" heavy vacuum hose. my room dimensions are very tight(5'x3' w/3x3 tray) but the small fan and hose keeps the room @79 degrees. i think with 4" ducting and a better fan than i have a 600W wouldnt be too overkill.Was thinking of upping to a 600w light setup but i think it might be overkill for such a small area, and i think it may cause heat issues.
So a question.... Is 4 inch ducting able to move enough air to substantially cool a 400w light? could it cool a 600w? temps right outside the outside the op rarely go over 70 even in summer
I think if u are in a small space and not enough room for the 6" ducting i wood go ahead a get the 400 w light since space is an issue. U need allot of floor space and head room for a 600w light pluse running all the ducting aroud ur grow space.Sweet let me know how it goes.ok so as i thought the 6" ducting wont work without it being very noticeable. the 4" ducting on the other hand can be run out at near floor level and hidden with ease... even for out the window air dumping if need be. will be doing some looking tonight into options for cooling and the carbon filter.
Would 600w cooled produce more in the 3x3 area available over a 400w cooled? thanks for all the help
Im rite here...........subscribing so i can find you later
[/QUOTE]i think with 4" ducting and a better fan than i have a 600W wouldnt be too overkill.
[/QUOTE]as for attic venting ill have to do some more looking up thre.. last thing i want is every one in the building knowin what goin down
U will need sum seeds too!!!!!Im a new grower trying to grow weed in my closet. I have a fish tank. Foil paper to cover the fish tank and fluorescent lights. anymore advice?
those need to be separete systems. The air cooling for the light is one system, 200cfm fan blowing air through the cooltube and out of the room. Since it is a closed system, no smell, cheap fan. Now the odor control/intake exhaust system is where you would want to spend your money. The reason is simple, if you don't have a good enough fan to create a slight negative air presssure in the room, you will not have odor control, the air will simply leak out of any opening, 25cfm through a pencil lead size hole. BY creating the slight negative pressure all of the air going out of the room will be drawn through your carbon scrubber, you could even use passive intake for your fresh air ( a hole twice the size of you exhaust line) If you want to use active instead your intake fan need to be slightly smaller cfm than the exhaust, again to create that negative air pressure. Please keep in mind the cfm listed for fans is the output with no flow restrictions. Every bend is a flow restriction and t's are one of the worst there are. Never use t's in air handling lines, use y's just like you use for sewer lines, or take the flow restriction into account. VV
The 600 uses 50% more power and produces 100% more lumens. If the difference in cost is less than $150.00 it will pay you back your additional investment when you harvest the first crop. VVThanks victor! with only a 3x3 table would you go with a 400w or a 600w?
Thanx VV, its allways good to get a second opinion, xspecially from u.The 600 uses 50% more power and produces 100% more lumens. If the difference in cost is less than $150.00 it will pay you back your additional investment when you harvest the first crop. VV
I wood at least go with a 200-450cfm fan.recommend any place good for fans?
www.plantlightinghydroponics.com
for just cooling ducting a line in and out using no air from the room, how many cfm would you say a 600w would need to stay cool? Thanks for all the help +rep both of you
Not at the moment cuz Im still vegging but u can hook one to it u just need a bigger fan to move more air thru everthing.are you running through a scrubber before the light?
If i where u i wood put it together this way and im going to show u how to put it together 2 differant ways. one will be the closed loop way and will cost allot more cuz of the all the xtra fans that will be needed.I wanted to run a closed loop for the light.. the more heat I keep out the better right. still looking at blowing the cooling exhaust up into the attic spaceSo i was looking at a y pipe and was thinking, what about a closed loop for the light but exhausting it and the scrubber exhaust out a y pipe together, and adding a passive intake into the room.
I found this in AL B. Fuct thread and there is allot of info in there if u give it a go.Al B. Fuct said:This is a closed circuit path for the cooltubes. Cooltube air is drawn from outside the room airmass and dumped outside it as well. If the air going into the intake blower is 25C or below and there is sufficient throughflow, you should be able to keep the room at 25C max.
If the ambient air you have available to draw in is hotter than the 25C target, the only thing that will bring it down is aircon. If you must use aircon, cooltubes will make it work much less often- read 'much cheaper'. With aircon, the intake & exhaust blowers should not be on a thermostat, rather should be run on a digital timer for 5 mins/hour during lights on. The aircon will manage the temp & humidity but the exhaust blower needs to run occasionally to draw in CO2 laden air and dump CO2 depleted air.
The cooltube ducting should be as short and straight as possible. Don't be tempted to allow the cooltube to draw air from inside the room (especially if you have aircon). This will affect temperature stability. If the total length of your duct & cooltubes is more than about 4m or if you have more than a couple 90 deg bends in the path, consider a centrifugal blower instead of an axial. Axials don't deal well with pushing into obstructions or long ducts. Centrifs can generate high pressure and cope much better with such demands.
View attachment 244576
The second way and cheaper is venting with only one fan and pulling air from inside the tent to creat a neggitive pressure, in the tent, to vent all the air thru the light and out the room in to attic. This is the way i have my tent put together and it works well and only requires one 6" Vortex fans 450cfm with a 600w light.
My tent is only 4x4x6 and does not have allot of area to vent thats why i have only one fan, it just works fine for me this way, but u can allways start with one big fan and see how it works. then if u need to move up to the close loop just buy more fans. If u go the other way u are going to have aleast 2 or 3 differant fans, but if u have allot of coin to drop go with Al's closed loop for a better way of cooling and venting and bringing in fresh air.
I get all my stuff from www.plantlightinghydroponics.com they have the best prices around on the net. IMO
Let me know if this helped at all.................
-Styl!st
Ur welcome!!!alright, thanks for pic
what easiest besides a flood table,Watering by hand.lol
drip system? i thought drip system would be easiest, pots,drip stick,pump,rez
temp, DONE?Drip systems are allot harder to clean in between harvest, cleaning all the hoses, drippers, buckets, and rez. If one of the dripper lines get clogged by the nutes bing pumped thru the lines and u dont notice in a short time u may lose a few of them by under watering them.
Plus every time ur done with that grouth phase u have to clean all thoughs lil parts with a tooth bush with H202. Thats way too much work for a 1st class stoner, like me.
I wood rather just have to clean a few small size pots, flood table and rez. Plus going with a flood/drain table u can find all parts at Lowes....
iunno maybe pics are misleading meI cant imagine have to pull all that apart ,between every harvest, and haveing to clean all tat build up from the nutes. It much easyer to clean a flood/drain system.IMO
seems like all the stuff for drip system is at home depot, i saw lots of things there but maybe drip sticks wasnt that maybe it was just a big T shape with no water coming out bottom.U can find all the parts at home depot or Lowes too for the flood/drain.
But its better to go on line for the pump/air pump
That way too expensive for a pump, i got mine for $30, online, and the air pump for to line for $15.a 400 gph pump is 75 bucks there, i wanna start ordering offline i need lots of things im just such a wuss, with no credit card.
[QOUTE]it is soo much cheaper to go to lowes instead of going to your local hydro store when your two friends are a plumber and the other does irrigationThen why wood u buy a 400gph pump on line for $75?
I wood got to Lowes and get sum kind of tuperware with a 6" deep lid, 1/2 hoses, air lines for airpump, everything eles u can get on line with a prepaid card, get thoughs at gas station, like Pump to flood table, second small pump to stir nutes 24/7, air pump with to line or more, Flood/drain connections too, that should be it.
I wood go to this web site's to find all ur needs
www.plantlightinghydroponics.com
www.hydrofarm.com
www.cheaphydroponics.com
I shop here allot and they have all most everything i need unless i can get it at the big box stores.
Her is a pic of a flood/drain system, u tell me which one looks easyer?