no but in the summer, a lot of time 3 times isn't enough unless they are 3 long times, but I don't know where you live
all my ourdoor chams are on 360 misters that are on 1/8 microtube that splits 3 ways from 1/4 microtube, then my hose comes to a good year splitter with 3 diff valves, I leave them all on, and run 3 seperate 1/4 to (3x) 1/8 and blue 360 degree mister heads. The first month I used this system I unfortunetly used more water than ever at this residence, so I went to home depot and got a hose egg timer so I'll hit the mist for 10 or so minutes multiple times a day, If I wanted it on a timer it could be done, but those flow control timers aren't that great and if I was going out of town, I'd hook my system up to a pump a resovoir of fresh oxygen rich water
so far in my experience, its sometimes wise to make sure all aspect of the chams life are sound, as his slight dehydration(which can happen extremely easy to chams) may be causing probs in his eating game, I've witnessed a lot of these guys stop eating for various reasons, sometimes it seems like they are protesting being captive.