Which Hanna checker to buy

[totalbiz]

Hello,

I am confused as to which Hanna phosphate checker to buy, the ULR which measures in PPB, or the regular meter, which measures in PPM. All the discussions on Phosphate I have seen seem to talk about measurements in PPM. Which would you say is best for use on a reef tank, the ULR or the regular? Thanks.

 

[XNavyDiver]

The ULR. No question.

 

[cilyjr]

I use the ulr phosphorus checker. When you get your reading you multiply by 3.066 than divide by 1000 to get the ppm reading.
Ex
Say you get a reading of 8
8x3.066= 24.5 ÷ 1000 = .024
Or just tell your apex which meter your using and punch in the number and let it do the math!

 

[miPapareef]

ULR ppb is the one to get

 

[totalbiz]

ULR ppb is the one to get

Thanks everyone.

 

[lion king]

Agreed, the ulr. It's the only one if you are keeping low nutrients. Every other test will show zero while you still may have a level of phosphate that could cause an issue. Here's the chart I use to convert: http://www.pny.se/aquarium/