Happy Birthday Heidi's tank!

Sorry to hear about all the troubles, I know the tank will bounce back better that before.

I had the same problems with my dKh dropping between 11-8. I've gotten it some what under control by running my ATO through a kalk stirrer, it took some time getting everything dialed in and I'm still tweaking it a little but I'm happy with the results; my dKH stays around 10.5-10.2, Ca 440, Ph 8.1-8.3 and all my corals seem to love it.

I can't believe you don't have an ATO! 2 gallon manual top offs daily? Ay ay ay.