On mine it says above 0.04 ppm may be harmfull. I have payed for it now so i might aswell see what i can do.
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Legalizdahurb Reviewed by Legalizdahurb on . ozone generator look what i just bought for my grow room.... http://www.beta-airshop.co.uk/details/vort35_70.htm the one i got is the ''70'' model....what do you think? Rating: 5