New Hanna Checker

[ssww21]

Hi there,
I just purchased a new Hanna Checker for phosphorus and I received a reading of 1ppb. Is this high for my tank? What should this reading be for a healthy tank.
Thanks
ssww21

 

[csb123]

With the phosphorus checker, you take the number that pops up and multiply by 3.066, then divide the result by 1000 to get the phosphate level.

Ie. (Z x 3.066)/1000= phosphate

The optimum level is debatable, but I aim for 0.03 to 0.09

BTW, you live in my hometown!

 

[Randy Holmes-Farley Verified Community Expert]

It is not high, and is within the error of the device of none.

 

[cracker]

Ok so 1ppb =0.003 ppm There is a conversion chart You can print .

 

[ssww21]

Thanks for the info. So why do I still have a bit of cyano?

 

[Larry L]

Here is a conversion chart you can print: https://cdn.reefs.com/blog/wp-content/uploads/2017/08/Phosphate-1.jpg

Hanna says the accuracy is ±5 ppb ±5% of reading. So for example if your reading on the checker is 10, the actual values could be as low as (10 - 5 - 0.5) = 4.5, or as high as (10 + 5 + 0.5) = 15.5. Using the chart that would mean a phosphate value somewhere in the range of 0.014 to 0.047.

 

[Dan_P]

Thanks for the info. So why do I still have a bit of cyano?

Water parameters tend to be poor predictors of nuissance organism growth.

 

[GaZZaW]

Thanks for the info. So why do I still have a bit of cyano?

more than likely a nutrient imbalance. what are your nitrate readings?