Which would you accept?

[scotty333]

Hanna phosphate checkers drive me round the bend sometimes

I’m targeting.05-6 po4 with weighed out food added daily

Trouble is I was told the ulr is more accurate at lower ranges so check these pics out and tell me which is core t ( ran the same sample twice

I’m not buying the phosphorus one to give myself even more headaches

 

[Miami Reef]

The phosphate ULR is more accurate.

The difference between 0.06ppm and 0.12ppm is dismal IMO. Just use the ULR and don’t bother with the regular one, and definitely don’t get the crappy phosphorus ULR checker which uses the same reagent as the phosphate ULR.

 

[scotty333]

Thing is I’ve had .6 for the last week then say .12 and thought that’s not possible
The second run on the lr makes perfect t sense
Last night I ran a Salifert aswel and looked around .03 but not above .1

 

[scotty333]

Well I get the same every day , .11 on ulr and .06 ulr