Heating Troubles

Discussion in 'Growing Marijuana Indoors' started by gianlucatoto, Mar 28, 2016.

  1. He'll, I'm having trouble keeping the temperaturesensor below 80 degrees during the day. In fact, I had to turn my lights off because the temperature got to 95 degrees! I think the co2 bucket saved my plants from dying. But is there any way I could cool the tent? FYI I have no space for an airconditioner. There's already a 6" exhaust fan. No intake (although it's like 95 degrees outside anyways), 1 Mars 2 Hydro 400w and a 600w HPS is what I'm using. The tent is roughly a 3x3? Maybe 4x4 not quite sure. Any help would be greatly appreciated. Cheers!

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  2. 600w hps is likely the problem. That's a lot of heat for that little space if it's 3x3. You have the duct pulling through the light fixture? What's the air like intake wise? Just house temp?

    My 40"x40" stays right at 79 with a 400w.

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  3. Do you have a pic of your setup?

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  4. Is your tent located in the house or garage?

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  5. [​IMG][​IMG][​IMG]

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  6. There tent is in my guest bedroom in the house

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  7. Why don't you use the air in the house. You can keep the light out if the room. Seal the windows and let the tent door open . It would definitely cool you down. Are your plants in veg stage?

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  8. If you're running an exhaust fan your co2 bucket is a complete waste. The co2 it creates is instantly vented out. Co2 grows are done in sealed controled environments to prevent this. Plants don't die instantly because it hit 95
     
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  9. I keep the tent closed because, as small as they are, the stench of Skunk is insane. And they are supposedly in the vegetative stage. I'm not sure because they are auto flowering strains.

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  10. #10 killset, Mar 29, 2016
    Last edited: Mar 29, 2016
    Then the co2 will be going right out the door and the exhaust 1200-1500 ppm and large lights are needed to benifit from additional co2. Un-supplemented air is around 400ppms. Ppms like that are only going to be achieved in a sealed grow with a serious co2 set up. You'll have to get you're environment under control for that though. Co2 grows can handle slightly warm temps but seal up your grow in its current situation and temps will probably go sky high.


    Back to your problem what is the temp of your incoming fresh air? It needs to be cooler then what you want to keep your grow at. Got to make up for the heat from the light. Don't expect to draw in mid 70° air and keep it there with a heat source like a light
     
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  11. You will have to move more air
     
  12. That is the problem. I was thinking of getting an intake, but I have no source of cool air

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  13. I'm not talking about adding an intake. That won't help if the air isn't cool. The passive intake of the tent is probably just fine if your inline fan is of an adequate size. However it needs to be drawing in cool enough air. If you have no source of cool air things will only get worse as weather warms up. You gotta find a way to pull in cooler air.
     
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  14. Do you have another window. Or better yet can you set up in another room. Maybe on a lower level
     
  15. I do have another Widow although it gets really hot out here. And it's a 1 story house

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  16. What if I replace my 600w HPS with a 700w Mars 2 Hydro? (I don't know the actual watts)

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  17. What if I replace my 600w HPS with a 700w Mars 2 Hydro? (I don't know the actual watts)

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  18. Then you'll be using a much smaller light which results in much less yeild. Advantage would be less heat but you still need an adequate exchange of fresh cool air for the health and vigor of the plant. 700 only means the diodes can be ran at 700. They're ran at less then half that so the light lasts longer. 700 means nothing to a grower. Its not an equivelant rating.
     
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  19. Try the widow for intake. Lights off during hottest part of the day. What I do to gain a little lower temp. I put a frozen sealed 1qt container in an open Tupperware tub just big enough for the frozen qt container put your out going airline in the bottom of the Tupperware container. Put some water in the Tupperware. Just enough to cover your airline. Tilt the Tupperware on an angle so you don't need to use too much water. The more water u use the faster the ice will melt. And it won't keep the water as cold. Once you tilt the container put your airline in the water. Put the quart of ice on top. With the cooler air coming from the air line. You will generate more oxygen due to the cooler air. It will also cool your water but not make it too cold. Will also improve your humidity a little bit. And since the cooler air comes out from under your plant it will lower the temp at the base of the plant. All good for plant and it's free. I keep 3 was in my freezer so when one thaws out I can replace it with another one. I use 3 because it takes some time to freeze the quarts of water
     
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  20. Due to the heat. I'm using my 600w HPS at 250w (max 400w). I could replace it with the Mars II 700w drawing an actual 332w

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