I got my first tarantulas in July and everything was going good so I kept getting more. Everyone was growing and molting and eating with no problem. Then all of a sudden two day ago when I went to water all my spiders more then half of my collection was dead, and I have no idea why. My collection consisted of 10 P. regalis, 5 OBT, 2 A. versicolor, 2 P. irminia, 4 A. amazonica, 5 A. Minatrix, and 1 P. Vagans. I lost in a period of 24 hours 7 regalis, 1 OBT, 2 versicolor, 2 irminia, all the amazonica, vagans and 4 minatrix. My usual routine is that every thursday I would water and every monday feed. All of my conditions were right the room gets not cooler then 75 degrees at night and during the day is around 82. Nothing has change since I have had them. I dont know what happened but it sucks and now I'm just trying to keep the rest of them alive. All the ones that are still alive are doing fine. Does anyone have any ideas what might have happened?