Okay, I give 20 to 1 odds that its the well water. If your not running it through RO
filtration than I bet your dumping tons of heavy metals and other things into your tank that will never show up on any test kits. Secondly the seachems aren't bad kits for getting through a cycle, however I would go with salifert from now on if you want to really know whats going on in there. I have found that sea chem and red sea are very unreliable and often times show you what you "want" to see, not whats actually there.
Buy yourself 30 gallons of RO
water or get yourself a filter and make up a fresh batch of IO water. Let that sit for 12 - 24 hours with a powerhead to circulate it and then drain every drop out of your tank. There is a chance that your substrate and live rock could have sopped up some of the stuff in your well water, but only being 7 days you may be okay.
This is just my opinion, but I feel pretty secure in giving it to you.
Here's to swimmin with bowlegged women.
Reef with 30G Sump/Fuge Combo
-30G LTAnemonarium with mated porcelain crabs, 10 sexy shrimp, and 2 pink skunks all tied into the other 135G in my system.