Aquatronica Density Probe

[Phyto]

I use Ph solution for the ph probe but use my D&D refractometer for calib. of the density probe.
I read so much about the accuracy of refractometers but wondering if it's worth buying the proper fluid?

[james141]

IMHO refractometers are accurate enough, remember it is consistancy more than accuracy, I wouldnt waste you cash :)