What p04 level does your GFO reactor effluent read?

[ksicard]

I'm trying to find out what most peoples po4 levels read on their GFO reactor effluents so I know when to change out my GFO. Please let me know what levels your GFO effluent reads and at what level you change your GFO at.

 

[Fish Keeper82]

After a fresh change of GFO output of reactor reads 0ppm. To tell when its time to change GFO I go mainly off of how often i have to clean the glass. I have checked it when i do change it and its about .05 ppm.

i change it about every month and a half.
i test DT water weekly and my readings are normally about .01ppm - .03 ppm with Hanna Checker.
I usually have to clean my glass once a week on fresh GFO . When it gets to need a cleaning every 2-3 days i change GFO.
I have found that comparing GFO reactor effluent to DT readings can be misleading with the margin of error on testers. Its easier for me to go off the glass algae or just change it every month and a half than to constantly test PO4 .

 

[droog]

Agree