| Re: 1st indoor grow 400w hps
I tried painting some plastic once... you gotta make it black first then white to be lightproof. Also, chances are that the paint won't stick well to the curtain, and it's gonna flake off making a huge mess... plus costing you a shower curtain and two cans of paint. Just use the panda film instead, it's totally light proof and really tough.
If the temps are down to 40s I don't think just a light will be good enough for heat. think of standing next to a campfire when only one side of you ever gets warm, so you gotta turn... there will always be shadows with a single light source, creating hot and cold spots. You could send the exhaust back in to conserve heat in the wintertime, but you might wanna add a carbon filter. You might also want to use insulated ducting to keep the heat loss and fan noise down.
Keep that florescent light as close as possible without touching the leafs about 2 days after they sprout.
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