Leaky tubs and electricity. What could go wrong there?
I was at our local Hydroponics store last week and saw that they had the usual black trays that cost $2 that you can put 8 6-packs in (my favorite humidity tray except that they spring a lot of leaks). They had heavy duty, run them down with the pick-up truck pans. They cost $5 instead of $2 but when you have to use at least two of the $2 ones (one to hold the water and one to catch the water dripping from the first) and sometimes 3, they are a good buy.
Daisy