Ouch, right after the swap I have a tank problem. Everything was great, I went out for lunch and came back to a dark tank. After a lot of trouble shooting, I found that my AC thought that the tank temp was 101. It turned off the light and turned on all fans. By the time I found out what was going on the actual temp was 70. The worst part is that is kept cycling on and off my MH. I switched ballasts, not sure if the first ballast still works. I put the heater and MH on manual on. Where i need help is, should I try and replace the prob, of take this time to get a DJ strip and reagular timers. If I go with the DJ strip, what do you guys use for a temp controller? Luckly its cold so I can relly on the heater temp setting to keep the tank at 78 during the next few day. So far everything seems to be doing okay.