APEX PM3 dissolved oxygen with sensor (does anyone use this?)

[scott11106]

i was wondering if anyone is using the apex pm3 and sensor? if so should i ad it to my system and why?

 

[scott11106]

anyone??

 

[ca1ore]

PM3 is about the only apex module that I DON'T use. The probe is crazy expensive (and requires a frequent membrane replacement) and it just never seemed to be a necessary parameter to measure. Oxygen saturation is pretty easy to accomplish with a properly circulated tanks, and your fish will quickly tell you if there is a problem. Unecessary in my view.