Thinking of getting one b/c my salifert reads 0 ppm yet I have some algae growth... therfore there must be some PO4 there!!! Please...what is the model # for the Hanna PO4 colorimeter? Is it more accurate than the LaMotte or Hach colorimeters? Is it beneficial to get the multi ion version (so you can perform NO3 and other ion tests as well)?
Thanks in advance for your help,
Jamie
Thanks in advance for your help,
Jamie
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