Test kits

gasman

Reefing newb
When should you toss out old test kits? I have looked and no expire date on them. I have API test kits ( I know cheep).
 
If you ever wonder when your kit may not be working, have your lfs test your water to see if your kit is accurate.

api is actually a pretty good kit for your basic 4, I think that the rest of your test kits should include salifert.
 
I would like to swich to salifert. It will be a little at a time. Most of my tests are api except ph, nitrate and nitrite. Which these 3 are the oldest of the tests.
 
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