Co2 at lights on RH high when there out?

Please bare with me as I'm about to atempt to paint a picture in your mind of what I'm dealing with here. First off I've built three rooms in my two car garage. One smaller mother camber ,one 10x10 veg room ,and one flower room. Then out side of each room there's three ebbn grow resivors with all the fixings. I've used those before so no problems there. . In my mother room I have two 8 t-5 hoods doing the job. Then in the next room there's a 1000 watt dimable MH super blue , and then there's the trouble room . This room is the largest of the rooms , the flower room. Ok now the system is a water/air cooled system all hooked up to a manifold piped out side to a 3hp chillking chiller using a 1hp flotec inline pump. So the veg room it has one 8 in inline Eco plus inline fan pulling through first one six inch ice box then the hood , then again through another ice box ,finaly ending up into the mother room to help keep cool. Then in the flower room I have a 10 x 15 room with 4 1000 watt dimable hps's that all have there own ice box and six inch fan hooked in a closed ducting system . Then there's the co -2 generator with it's own ice cap heat scrubber that takes some 98% of the heat out of that. Ok that about covers the lights as well as the way there cooled. That seems to work just fine. Now to the venting. In the mother room as I said before it has cool clean air going in and a 4in inline up top pulling any heat out ,works great. Then there's the veg room , now this room has it's own 8 in inline ducked in through one 8 in ice box hooked to a ice box thermostat for extra ac. Then there's a 4ft can filter standing up in the corner with a six in inline fan scubbing away. I also have a frigidair dehumidifyer keeping my veg room below 40% RH. Now we get to the larger of rooms with the co-2 system. I have it air tight so that the co-2 will fill the room. But let's get into what's in there. One large can filter with a six inch fan on it scrubbing away then I have two 8in inline fans hooked up with charcol filters that push air In and air out during lights out. I also have a 30 pint with constant drain dehumitifyer. Stay with me if you can. Now while the system is closed meaning the flower room while the lights/co-2 are on everythings great till lights out when the humidity is going up as the temps go down and I might of forgot to mention. I have no plants in my flower room yet. There plant growing in the other two just not the humid one my flower room. Now I realy thought this through and this should work. So can anyone at this point give me a hand at how to keep the RH down while the lights are out and the co2 is off that's when the fans turn on and the closed system turns open and drains into the veg room. Im very new at co2. Is there somthing I can get/do . Having 50% and no plants in there. ? This only hapens when it's dark and the temps get to 64 deg.

I completly forgot to mention the 10 in inline Eco fan hooked to two daisy chained 8 in ice boxes that's hooked up with a thrermostat. I also have a six on a six ice box in the mother room as well as outside in the main where the resivors sit.

I know it's alot to read but I didn't think it would be this long till somone said somthing?

id mspaint a picture, pictures paint a thousand words

And that's my feedback after all this time.....lol
does anyone have this shit?

Make an attempt at keeping the temp diff between day/night as small as possible. There are other growth benefits to this as well. Also think about a dehummer with larger per hour capacity. A lot of dehummers have diff ratings, 40-70 pint. If you read the specs you'll see they have the same motor. Only actual diff is storage capacity. Industrial rated dehummers are much better at controlling a fast rise in humidity like what occurs in a rapidly cooling room.
Hope this helps
Fred

A friend of mine had a problem with RH when the lights went out in his room.

He found that condensation was forming in his ducting and clogging the pathway for any removal and during the lights out the condensation was going back into the room.

Have you checked that this is not the case for your system?

Just a possibility that you could have water collecting in your ducting that is causing the RH to rise drastically.

This may not be the case but i think is worth investigating to check and see.

J

Get a dehumidifier and hook it up on a timer so it only runs when your lights are off. Most dehumidifiers have a digital set point so all you need to do is plug it in, set the RH% and your good to go.

Yes I actualy have two dehumidifyers. One made by fridgidare. It has a hygrometer thermostat and a constant drain hooked up . It's supper nice usualy. I would think two eight inch inline fans and dehumidifyers would be bringing it down ? It's only 10x15x10 room. ? It's 70 deg and 47 % RH without anthing in there. funker" anyways I'm must be missing somthing when it comes to how to build a Co2 grow room. Flower room to be exact

Just bought a Danby 70 pint that says it's good for the size of my room x two I'll put the other one in the room full of resivors

Thanx guys I think it's working and will post pictures as soon as I get the resivors and pots hooked up right now I'm under construction. I never start doing things if there not ready first Any ways always a help. Look for super high teck weed house thread!!!