So this might stir up a conversation
What I do is check my water every 3 days with a dip stick and then on sundays when I do my big cleaning I do it with an independent test kit.
So early last week I did my dip stick check and the nitrate showed an ever so slight reaction. I did a test with my API kit and it showed zero. Knowing people say API is a crap kit, I went to my LFS and he used a salifert test and it showed zero.
So I blew it off as a crappy dip stick. Well the readings continued but kept getting a little darker with future dip stick checks. Today I tested with my API and I finally got a reading of 5ppm. Went to my LFS, he used a salifert test (by the way he only does this for me bec I spent a lot there) and he got 5ppm.
So I scratched my head why my nitrates have been going up. I looked closer in my sump and there is poop all on the bottom. SO I am sure this is the cause. Not sure how it gets past the filter sock, then skimmer, and then another filter pad, but it did some how.
So it looks like my dip stick found nitrates before two other tests.
I have a little more faith now in my dip stick!
