I use O3 to cover up. I don't flower in the house but the mother plants I keep in the house smell about as much in veg as in flower. It works great for me. I would suggest not putting it in your tent though. 1000mg is most likely going to be WAY more than you will need for the job unless you're in serious production. I'm only holding 8 small mothers in the box and only need to run my 1 gram/hr (1000mg) unit for 5 min every 3 hours. That covers my whole house. I suggest you buy a cheap intermatic digital timer at lowes or home depot. That way you can make fine adjustment to the cycles. You want to shoot for not being able to smell O3 or weed. That's a good ballance. I like to be able to just get a tiny wiff of O3 when my heat or ac first kicks on.