Are the new and improved reagents for PO4 actually improved? There’s a decent chance I’ll get one for Christmas. I might try to sneak in a NO3 checker too. For NO3 I would want HR correct?
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Salifert for po4 is not great, basically I find if you can see any hint of blue at all, then your po4 is over 0.1, if you want to keep your po4 lower than 0.1 which a lot of us do, then imo Salifert is not going to help as po4 lvl below 0.1 looks like zero to my eye.Ok it might well have been. Thank you for letting me know that.