Depends a bit on the location of the enclosure. Assuming it's in a typical house environment with 20-40% RI, you want fairly small vents. I have two 4x8" vent registers on mine and that's more or less it (plus some small holes in the top where cables go in).. I also have two 140mm fans inside the enclosure to circulate internal air, and a smaller 80mm fan on the outside of one of the vents that I can use if needed to draw more outside air in (I use AC Infinity fans you can get them from amazon, they're great).
Basically, you can't go wrong erring on the side of less ventilation to help make sure you can maintain humidity. You can always compensate/ add more air flow via fans if you decide it's needed.
Totally agree, but I did have a faulty mister that wasn't reading right, so it can be that also. Very hard issues to solve - it takes some dedication that's for sure.it can depend- sometimes it's unavoidable. For instance if you have the AC on in your house and the room temp is ~75 and the inside of the enclosure is 80-85 with very high humidity - that is going to encourage condensation especially on glass and metal. I've had that kind of issue with mine... The answer is fans and circulation. Interior circulation helps a lot (I have the two 140mm fans circulating air inside the enclosure like I mentioned) and a slight stream of exterior air will help too (I use a small fan blowing just the tiniest little constant stream of fresh air in). Also having misters cycle in small spurts more often as opposed to long spurts less often will help too (less moisture for large droplets to condense).
It's definitely something that is different for everyone since enclosures and outside environment factors vary so greatly and will require a bit of trial and error.... eventually you will find a happy place though
Hi, thanks for all the reactions.
@rantology, hoe big is your enclosure? Where are the fans located? On top? How should I see it?