Agreed, Saliferts are quite good for the money. Elos and Lamotte's are nice by pricey. Definitely don't get test strips, they're useless. Also, make sure the test give you a result in actual numbers. A few kits just give you a Good-OK-Bad reading, which is useless. The Red Sea Alkalinity test kit is one that comes to mind that doesn't give an answer in numbers.