How do you deal with humidity from your tank?

[CastawayReef]

Hi Reefers!

I'm dealing with some humidity issues with my 120 castaway reef. My tank is in the basement and if I don't run my dehumidifier the RH can reach 71%.

The 70 pint danby dehumidifier I have runs constantly and raises room temperature a few degrees and is loud.

My question is how do you deal with humidity from your reef tank? Totally closing the tank top and sump with cover will work bit no gas exhange.

Any ideas?