Phosphate test kit help

[Fish Drive Me Crazy]

Was looking to get a phosphate test kit that is reliable and accurate any advice due to hair algae was looking at seachem , sal and Red Sea and elos and input is appreciated

 

[nemodan]

I am using the HI736 Hanna Checker Phosphorus Ultra Low Range (ULR).

Range 0 to 200 ppb
Resolution 1 ppb
Accuracy @ 25°C/77°F ±5 ppb ±5% of reading

 

[JoelA]

+1 ^

I bought the 713 model if memory serves and it's not accurate enough due to insufficient sensitivity.

 

[jamesdong009]

This is no longer being made but I use the Hanna HI 93713. The club also uses it for their water tests.

http://www.marinedepot.com/Hanna_In...ums-Hanna_Instruments-HN1191-FITEMOID-vi.html