This is what I ordered to pvc my new 2 tank system. It's a primer and glue in one. Seems eco friendly and made potable for drinking water. Curious on some opinions. Went this route rather than the traditional oatey primer than glue
I have used it to do the plumbing on a koi pond and to do the plumbing on Acer's Tank. You can search on here for his tank build. Works just fine and I have been pleased with it.