Okay, I have two 3x5 tents with two plants in each. Zone 7A/b. Outdoor climate pics attached. Outdoor humidity has been around 70% ish dropping to 60ish later in the week. The lung room is 145 sq ft in the basement. I just moved everything into this room so it's a little messy.

I just purchased a Medea u-shaped air conditioner 8k btu for the window which you can see in the picture.

I'm having trouble keeping the humidity in check. The air conditioner is set to 72 yet the humidity is 60 RH. The air conditioner doesn't seem to be pulling humidity out of the room. I heard this can happen with oversized AC units however Google Gemini suggested going with the 8000 BTU AC because of the extra humidity the plants are going to put out. And the heat from the grow lights.

The AC has a dry mode which works well at decreasing the humidity in the room however it makes things very cold and it won't shut off. It just constantly dehumidifies.

So I've constantly been switching back and forth from the cool mode to the dry mode. I have plants at all different stages in this room so I need to tailor it to the the one and latest flowering stage.

Is this normal behavior or am I doing something wrong? I do have a separate dehumidifier in this room but I was really hoping the AC unit would take care of everything.

Any suggestions?