alright folks, i bought a 20lbs tank and got that shit filled. this after noon, during lights out, I put the tank in the room and turned the knob a little bit, thinking that all the co2 would be let out, so I left for about 2 hours, came back to check it and realized there was still like 80%of the tank left, so i said fuck the noise it makes and really opened the knob fully and let it sit for another hour, when i came back the tank was like a block of ice, and it was kinda stuck to the floor. when i went into the room i realized there is a void of air, you literally cant breath. so I went outside and got some breath then held my breath and ran in and turned my outtake back on. I i grabbed a couple fan leaves and took it in the bathroom to check it under light, and it literally killed 99%, at first i thought it killed 100% I had to look at the leaf for about 2 minutes to notice that one mite was crawling suuuuuper slow, so he might have actually been dieing infront of my eyes or maybe with another 10 mins in that room. I think that had i opend the tank fully when i first went down and then checked it 2 hours later i can bet that every single mite would have been dead. that co2 gets into every nuke and cranny of your plants. i will do it again in a week if i see any come back, because i feel like they only had the full 10,000ppm's for about an hour after i fully opened the tank. the mites are really only on this one grapefruit diesel i bought from a club, but the plant is caked with mites, every other plant seems to be fine.