Take what I say with a grain of salt. I've got a sealed room, its pretty dialed in but I use an exhaust at night to keep humidity in check. I'm just throwing ideas out below....
- You need a bigger dehumidifier. You're running LED lights, you will require even more dehumidification than if you were running HPS lights. If your watering 25-35 gallons a day, that's approx. 200-300 pints and your running a 180pint dehue.
--I was thinking this as well, but originally the room humidity was under control. I'm not sure what has changed, I was feeding about 40 gallons every 2 days, now I am geed about 25 - 35 gallons every day. Also, when you go into the room it doesn't feel like 71% humidity, it feels much less, but all my readings say 71%. This def make sense though, I'm adding a air mover to see if I can create more air flow to see if it helps. If not i'll need another dehu.
- Get a heater in that room and get the day/night differential close to the same. Your day and night temps along with humidity will stay consistent.
--My system does have heat and ac modes. My dehu also adds about 108 degree dry air while it's running. I don't want to sound stupid here, but what exactly would be my approach in this step?
- Not sure how you're supplementing co2 but if your controller has a photocell than your best bet would be to hook up an exhaust fan in your room connected to a humidistat. This is what I do and it keeps my light off humidity perfect. My Co2 controller has a photo cell so my burners don't turn on when lights go out when room starts to exhaust at lights out. I've noticed it only really exhaust for more than a few minutes right when lights go out. After that initial purge the exhaust only kicks on a few times per hour for a min or so.
--As of now I've unplugged my CO2 system completely. I'm getting about 1400 at night, and it gets down to 300 at night. I've unplugged it to find out if it's leaking or it's not leaking.
I'm using the below for the regulator and controller. The Atlas 3 has a setting called F11, this is for day time enrichment. It does have photocel on the front if you look at the product page.
Compatible with Titan Controls® CO2 Controllers or other 120 Volt controllers and timers. Precision accuracy flow meter—0.5 to 15 SCF/hour. Features heavy-duty solenoid valve. High-quality oilless pressure gauge. Includes two plastic tank washers and 12 ft of CO2 dispensing line. Brass...
www.titancontrols.net
Controls and monitors CO2 from 0 to 2000 parts per million (PPM). CO2 enrichment or CO2 exhaust features. Easy to setup and operate. Enclosure resists dust, rust and moisture. 5 Amps maximum/120 V/ 60 Hz.
www.titancontrols.net