deltec epoxy issues

[christyf5]

Now I know some of you hate this stuff. I like it, it works for me and I like the coralline color. However, I purchased my last batch in November and went along my merry way attaching various frags. Strangely enough almost a month and a half went by without using it and I used it the other night and it won't cure. I looked online to see that i was using the correct ratio of 1:1, I've tried various other ratios of the two parts. I've had a ball of it sitting on my desk for 3 days now and its still soft and gooey it was all soft and gooey in my tank as well. I had to go out and buy some of that holdfast stuff (which I hate the smell and that its hard to get off your fingers while you're working in the tank, but hey it seems to work).

Anyone ever had this issue before? Just wondering if its a quality control thing or an environmental thing maybe? The fish room can get pretty tropical sometimes but for the most part with the weather lately its been average room temp or a bit lower.