wheelman76
New member
Matt,
When did you purchase your Salifert nitrate test kit? If you happen to keep the colour card of your old Salifert test kit, then please compare it with the present one you are using now. I have read reports on this forum that there was a print error on one of the batches. I have recently helped a fellow reefer in the UK who found an unexplained sudden jump in his nitrate readings. When I prompted him about the colour card issue, he compared the colours on different cards and found discrepancy.
I always test my test kits using FM multi-reference solution to rule out things like this.
Just a thought ...
I noticed this with the latest salifert nitrate kit I bought. It has a different colour card then all the previous kits , it's a larger card and the colours are slightly different which give you a higher nitrate reading than the old colour card would have.