I recently started flowering my 16 cola grow with my new 1000w cool tube hps. I am sucking air through my cooltube through ducting out my tent and into my attic with a 440 cfm exhaust fan. I also have 1 240 cfm inline fan at the bottom blowing air into the tent. I thought this would be enough to keep temps at a decent level. Unfortunately I am shocked to see that the temps at plant level are 93-95 F. If anyone has any advice or tips to help me cool things down please feel free to post. anything is appreciated at this point.
1000w HEAT ISSUES PLEASE HELP
- Thread starter db2
- Start date
HydroDawg421
Well-Known Member
If I read that correctly you are moving air in to the tent and not out. The air around the tent is warm/hot so all you are doing is blowing hot air around. Try sucking the hot air out of the tent
Grow mo
Active Member
this is what i do with my 1000w and i am currently facing issues trying to heat up my grow room. in your scenario im sure it would be more effecient ha ha
I am sucking air through my cooltube through ducting out my tent and into my attic with a 440 cfm exhaust fan. At the bottom there is a 240 cfm fan blowing air in. I may have worded that incorrectly. Sorry
donutpunched
Active Member
You need to make sure you have the right size fan.... I am gonna have to guess you have 6" cool tubes? 1000 watter should use 8" cool tubes.... Secondly you need a good size fan for those 1000 watters... are you using a 4" fan? The CFM seems pretty low.... For 1 cool tube I would probably use a 6 inch fan a 8" would be awsome... I run 3 8" cool tubes in a row with 1 8" vortex and they are cool as can be... But I also run 6 6" cool tubes with 8" fans per each set of 3 and since the bulb is so close to the glass they still get pretty hot so I have AC in the room....
That makes a lot of sense! I wish I thought of that before buying the light tho lol.
I did try something new though in regards to cooling the tent down. I flipped the 240 cfm intake around to make it another exhaust and I opened the 3 long n skinny vents at the bottom of the tent walls to make air intake points. I am now able to maintain 89 degrees F in the tent. Which isnt great, but a lot better than what I had before.
Does anyone know if 89-90 effects the plants growth negatively still? I am still trying to find ways to drop the temps to maybe 85 and under
HydroDawg421
Well-Known Member
Open a window if its safe/cooler outside or you can crank the a/c. Also, if you aren't using CO2 you can leave the tent open.
HydroDawg421
Well-Known Member
Premiumunleaded
Member
I run a 1000w in a 4x4. I use a window A/c to keep it cool. I vent into another room and it stays around 78. I only have one fan (6" through a blockbuster air cooled reflector) with a scrubber (inside the tent). If you just keep circulating hot air it won't get any cooler. A source of cool air is almost a must with a 1000w and a 4x4.
p.s. Make sure your ducting is as straight as possible.
p.s. Make sure your ducting is as straight as possible.