I'll be up for a while yet. If you're still online, it's be great if you could get a +6.5 reading; two sequential 'rising' readings are what we ideally look for in these situations.
> I realize I may have avoided a major situation tonight had I not home tested.
There's no question in my mind that you avoided a problem here. And, though Tank may well have had the reserves to deal with this on his own, there's no reason to tempt fate. (Also, note that you handled this on your own, without having to head over to the emergency vet. I know you dropped some money on your testing supplies, but you saved a bundle on not visiting the emergency vet.)
And honestly, you did everything right: you were proactive in learning how to home-test, immediately realised you had a potentially bad situation, immediately gave Karo, fed high-carb food, and asked for advice. You handled this tremendously well --
Jean and her Gwyn