I dont really have much of a humidity issue, it sometimes dips when the temps in the apartment change, and usually on the side without the pools/air stones. Its more for fun at the moment, but they seem to enjoy it...I usually turn it on in the morning for a bit before I go to work...a little morning fog.
I dont usually look at the gages, I use them primarily for the initial set up of the tank,making sure the tank is stable. I know that if its 74 or below in the apartment the heat lamps will not raise the tank to more than 80 degrees. And by the looks of the substrate I can tell if the tank is humid enough or not. And if the air stones are running the tank is perfect humidity wise. Condensation on the tank walls just means that yes its humid but also that the tank is warmer than the room its in by a great deal...kind of like putting a glass lid over a hot casserole to keep it warm on the counter, you get that condensation on the lid.
Im sure you can find foggers galore out there right now, this one also runs on bottled water, better yet distilled water, only. Otherwise there can be too much mineral buildup on the fogger. The reason I spent money and got one already outfitted was because sometimes getting them to work and outfitting them for the tank can be a hassle and end up costing more money. The foggers can also become rather warm, so if you do get one from Spencers or other store becareful the water doesnt get too warm for the crabbies if the fogger is in the tank.
