michelleolds
Member
i use kent liquid reactor as a calcium additive in my tank. when i used this new test kit (api) that i bought it showed only 300. so for the past week ive been adding the calcium. still has not come up one bit. day before yesterday i got a film on top of my water. i have 2 of my powerheads stirring the surface and they couldnt keep it off. so i got to looking at my test kit and the expiration date is may 2007. i called the test kit company and the guy told me it should still work just fine. what do you guys think?