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Thanks for all the great reply, but dont worry its just a scenario... my autopilot is fine, just wondering if i didnt click it right or if someone mistouched it.

understood it will be a waste, just wondering if the autopilot failed without noticing it wont be a problem if the co2 is not high in concentration right? less than 800 is still safe isn't it?

unable to find exact answer from other post, that's why posting it here. If the co2 burner didn't shut off after lights out, but the extraction fan is on 24hrs, and if the co2 level becomes stable lets say at about 800-1000ppm. is it gonna cause damage to the plants if this happens for many days?

USA!

This is the 3rd day... last time it got this big and gradually went away. The body is trying to recover. I don’t fee the burning effect unless try to touch it and it’s not itchy... learnt my lesson after getting this twice, will wear some arm condom like Homesteader said!

Thanks for your input, will wear sleeves next time...

2 times happened exact same way i was defoliating bottom leaves for my friends for a large number of plants. after finish, shower then sleep. and then will be woke up by the burning feeling. but he didnt get it.... only me. last time was right arm, this time is left arm...

It happened to me twice, and each time I had that was the next morning when I was woke up by the burning feeling. Am I just allergic or is it some kind of insect bite? It recovers in a few days...

thank you for all the great input!

Thank you, I guess it figure it out; my friend told me that device is not a transformer so the amp didn’t change... thanks for you input!

Hello guys. many great info here but i have not found what i need in the past like 20 pages. i guess i will ask here. I am in the US and the voltage is 110v, lets make it 120v for easier calculation. i am in a kind of old house and i heard i get about 50amp from the electricity company. Lets...

I think i posted at wrong category. sorry~

hello guys: I am using 2 x 1200W HPS (240V) and I know its getting outdated... I am trying to get some LEDs fixture but want to limited the amperage to certain amount. lets say i want to limit my usage to 30amp at 110v (from the street), how many amps do i have left if i am using 2 HPS above...