I've purchased expired GH/KH test kit(didn't check at the store)from Pacific on Delancy, and I phone them back right away in the bus on my way home, they gave me no hassle and told me to keep the test kit and go back anytime to use my store credit. So a couple of weeks later I went back for three true Siamese Algae Eaters, and these three SAEs are my first ones to live more than a year in my tank(from juvs to 4 inches adults).
I've also picked up a tiny clump of trimmings(pearl weeds) on the their sidewalk while they were cleaning their planted display tank(a really nice one, too!). They siphon the water out of that tank and to the sidewalk in front of their store. I still can't find pearl weed for sale anywhere, and aparently I don't need to find them anymore, my little garbage picking is growing into a nice thicket.
Needless to say, I love Pacific Aquarium on Delancy.
Few stores down from Win's Tropical(Mott St.), there is this other Chinese place specialize in flowerhorns and discus and other cichlids. If you are looking for discus in NYC(and if you can speak Chinese), this is the place to go. Sorry I don't have their name, but they are on the corner of Mott St. and Kenmare(I think).