Does any body know if API salt master kit (Ammonia, Nitrite, Nitrate, high end Ph) has an expiry date? I would assume if so, it would be clearly mark. I bought mine new and sealed, though now a little concerned because got it from ebay. Compared with LFS water test, mine are way off. However I've been told you absolutly can not trust petco to accuratly test water. Don't even know if they used a salt water test and they were using test strips.Just concerned my kit could be expired. The lot numbers on the bottles aren't expriy dates are they? I notice my salifert
test kits clearly mark an expiration date. Any info from your experience with API?
