ok, here's what I got
1. Instant Ocean Test kits, it has PH, Ammonia, Nitrite, Nitrate, ALK, 40 tests for each chem.
2.Aquarium Pharmacy, Nitrite test. about 30 tests
3.Red Sea Reef Lab, it includes NO3, PO4, CA, and some Supplements.
I got this kits when I bought the tank, they are not used, or rarely used. $20 total, they should last pretty long
4. Saliert(this is the good stuff) NH4($15,new), NO3($15,new), PO4($5, got like 30 tests left).