CVB, I eventually do plan to get an actual misting system for my 125. In the mean time however I use a pressurized hand mister. Works well, fine mist etc. I rarely go anywhere far away so that's never an issue. It's just easier for me since my Pixie needs to be sprayed periodically. However what you said about the frogs is 100% true, my tincs are used to it now but they used to get freaked out.Automated misting makes a big difference in time expenditure in larger setups (not to mention it misting while you're away), and also is aesthetically pleasing, since you can sit back and watch it mist. Frogs that tend to pop out when you're misting may also be more likely to do so if your hand is not in the tank waving a big metal stick around...
Umm, yeah. What he said! Except the last sentence.I haven't encountered a DIY mister that performed as well as a commercial product at a level of cost and effort that I felt was worthwhile. Usable diaphragm misting pumps can be be acquired new for $100 or less and are very good at what they do. I am a huge fan of building everything I can myself, from glasswork to plumbing to electrical, but I would find myself purchasing a standard misting pump the same way I use off the shelf gear for water circulation. The off the shelf part is inexpensive and nearly perfect technology.
Aside from the pump itself, however, I think buying all the tubing and fittings separately and assembling a system to your spec is the way to go, assuming it is affordable. Until we get a wholesale deal arranged with our fitting supplier I'd probably get the MistKing parts simply because they're cheaper (or so close as to not be worth the effort) than our cost to put together ourselves. I believe he uses pretty standard Legris fittings and Tefen nozzles, as Tony has pointed out in other places, but offers them at a pretty solid price.
Not that it would dissuade me from piecing out my own kit myself just for the hell of it.