Ouch man.Update.......the humidity has leveled out at 47%, an acceptable level. Only problem I see going on though, is it's drying my pots out daily too. Well, at least 75% of them. I'm actually watering daily right now, with a ppm at 500.........And I'm lightly flushing weekly with some fresh water, no nutes- something I've never done before. Plants are happy, they look great- I'll put up a pic on Thurs at 4 weeks finished. I'll get around to testing the room CO2 shortly, which should be very revealing.
Bad news.........my reverse osmosis tabletop device sprung a hose leak and flooded one of the upstairs bathrooms and the kitchen below to some extent. I'd say it was spilling water everywhere at a high rate for about 3 hours. 1/4 inch of water on the floor, the ceiling below will require drywall repairs and repainting- which I just had done last week. So, I bought a new r.o. filter, here on Friday. THERE'S NOTHING CHEAP ABOUT GROWING GOOD POT! I live on an old peach farm, my water is contaminated with all kinds of heavy metals (from the fertilizer salts) and other nasty's. My ppm is about 180, this device lowers it to around 10 ppm.
It's been over 3 weeks now waiting for Dr. GreenThumb to send me my 3 packs of Turkish Cookies. It seems that when he puts some stuff on sale, the seeds are older and sprouting less and less. These were on sale. Just in case they don't arrive or sprout, I'm going to order Expert Seeds "Zombie Virus", a high yielding, 100% indica. I grew it in 2017, this is a perfect strain for LED lights. Check out my grow on RIU. I did a poor job growing it then and it was still good- I said in that thread somewhere I was going to grow this one again and do it right the next time. Maybe sooner than later.......
if you have control of the temps you can slow down the temp drop after lights out to reduce that humidity spike. Also most have the ability to hook up a drain hose. If you put it up on a bucket or something then run a drain hose to a 5gal you should make it through the night no problem. Just some thoughts in not sure maybe you have already looked at?The dehumidifier is already working double time............. just to keep up. I still believe more exhaust will be necessary at some point in the future. I'm also curious how the room reacts in the winter, where outside humidity won't be as bad. Right now, it's like 85% or higher outside everyday- I live on the Chesapeake Bay and high humidity is a constant thru early Oct.- winters tend to be more mild though.
Ok. I was just thinking if the dehumidifier is having trouble keeping up then when the lights go off the temps drops fast and that leads to a spike in humidity and can reach 100% for a while since humidity is relative to temperature. This is usually how you get mold/fungus. Not so much the overall RH. I bet if you go in about 20-40min after lights out you see humidity of 80%+ but that's just a guess. I wasn't meaning that the temps would be an issue but more so the humidity spike that comes along with the temp changes. So if you have the ability to slow the temp drop it will help the dehuey keep upThe temperature drop isn't worrisome, as it's less than 10 degrees from high to low. The humidifier is already running about 20 hours a day, I'm not sure if running it another couple of hours before lights on would make much of a difference. What I'm currently thinking about is how to get the humidity into the 30-40% range for late in flowering, which will reduce any chance of mold and help the THC pop more.
In thinking about it, I'm also not running the exhaust system at night, which I guess I'll have to start doing soon enough......... and I'm watering in the evening, instead of doing it first thing in the morning. Some changes will be necessary eventually, still I can't complain as healthy as everything is.
Yup sounds like ya got it coveredGottcha..........When lights are turned off, the humidity is around 47%. The dehumidifier is running, putting off warm air so the temps don't really drop any UNTIL the dehumidifier shuts down early morning. Then the temps cool off at bit, the humidity rises slowly. I think leaving the exhaust on all night will help. Leaving a fan on (room fan, not the exhaust fan) will help too.........