I have a Hova bator 1588. I don't use the wells at the bottom. Too much humidity. Before you put eggs in the bator, run it for a few days and measure the temp and humidity. I also don't rely on the built in thermometer/hygrometer. I usually put two different ones in there. If I need any water, I use little plastic containers with holes cut in the lids.
I picked up a matching set, thermometer and hygrometer at
Petco today while we were out and about. Going to get my little bator plugged in and test it within the next week.
as for food coloring in the water, that's ok to do that, it won't effect the chicks to do that.
I have a question for all you hatching gurus, Have you ever started a batch and left home for a few days? I want to start some tuesday or wednesday, but we were planning a weekend trip next weekend and I'm not sure it would be a good idea to leave it unmonitored. I guess I can get one of my daughters to stop in every day and check it. Or I could just put it off a week and add the first few eggs I have dated to the selling carton.
Speaking of which, I was all excited because I got blue eggs two days in a row, now two days without one. Silly girls are just toying with me, in other words, just another typical part f life