Try a one way shutter on the water heater. That way if the water heater is not running the stopper is clossed so hopefully you would get no backdraft. When the water heater kicks on then the stopper should open with the airflow, but not open th eopposite way with the backflow...if you know what I mean. I have them on all my exhaust ports.
Thanks DST and Don... was just talking to a buddy, and he was saying much the same... think I need it for my heater as well... it is electrical ignition, so not worried about the pilot... but I am getting cold air draft through my vents. Shoulda thought about this a bit more... but I'll get it figured out. Just starting to cost more than I wanted. A few hundo more to fix and finish... need to fix this ventilation thing, and still have to get a veg chamber built if I am going to trade the tent for a 1k,
Gotta find a hood if I do that... cuz I would still like to use my 600... maybe use both the 1k and 600 in the flower chamber... and veg with the 250 and the 125... hmmm... gonna figure it out soon here. Other than the broken light bulb, and the backdraft... a tiny bit of light leakage on my false door which i will fix here in a minute... today is the wifey's birthday, and she has asked that I get a cut of Great White for her birthday.
She had some the other day from a local medical grower i know, and loved it... and she really doesn't smoke much. So... I am gonna trade 2 Hollands Hope cuts for 2 Great White cuts. I wasn't too impressed with the Great White. It wasn't as frosty as i expected it to be, and was kinda larfy. There was a LOT of reddish hairs on it... actually... it was mostly hairs. It DID have potential tho... and in the hands of a different grower could probably get different results.
I have to find my seeds... I have the ones for the front flower bed to sprout and get ready for transplant, a backyard garden to dig and plant... and wanna pop a couple Grand Daddy Purp, The UnderDog, and the two LA Confidential seeds I have too. I am so glad to have the space now.
I gotta find out about that cordset for the 600 and 1k... and see if they are inter-changable, and I guess if they are.... I am gonna need to make that trade... my girls were in a 600 environment before I brought them here... and since my 600 broke, I am only using my 125 CFL... that can't be good for them... hope i don't light stress them... you should see how bushy the four mothers are... and I have a bunch of cuts from them...