I have an 800 sq ft stamped concrete patio, sealed with Super Diamond Clear By Euclid
It has a green/yellow cast to it.. Thuets says may have put on too thick.. cut it with EuclidSolvent. or use Euclid Clean & Strip, to remove it.. Call Company: 1-800-321-7628, euclidchemical.com.
That don't work, I stripped it down with Dad's it's raw now, but I'm afraid to re-seal it. What can I use to avoid this problem again? What's your best sealer or solution?

Unfortunately stamped concrete needs to be sealed. The SuperSeal25 is a Non Yellowing Styrene Acrylic for Sealing Stamped Concrete. It has little tiny pin holes that allows it to breathe. By itself it will not yellow and is not prone to turning "white". When applied over top of a old sealer that has already failed, it cannot stop the old sealer from discoloring again. I am mentioning this because it is hard to strip off 100% of the old coating. Hopefully you did but if there is some residue left then your discoloration may come back