Changed GFO

Written by Geoff on March 30, 2009 – 10:22 pm (1 comment)

Changed as not seeing marked decrease in PO4 for some reason. Refilled with 1 cup GFO.

GFO Changed Changed GFO today as PO4 creeping up....
Changed GFO Changed the GFO in the TLF Reactor as notice algae starting to increase growth rate and Hanna Meter, which started using this week, indicated 0.08 ppm PO4. Used about 3 cups....
Changed Carbon Changed the Carbon in the TLF Reactor. Used about 3 cups....
Changed GFO Replaced Granular Ferric Oxide (GFO) and cleaned reactor. Used 1 cup of GFO. Switched out Maxi Jet 400 for 1200 to get better tumble as think that is reason GFO not lasting 14 – 30 days as it is caking....
Changed GFO and GAC Replaced Granular Ferric Oxide (GFO) and Granular Activated Carbon (GAC) and cleaned reactors. Used about 1 cup of GFO and 2 cups of GAC....

Posted in

Modified: April 2, 2009 at 9:15 pm UTC

Geoff on April 2nd, 2009 at 7:32 pm wrote:
Yea, down to 0.01 ppm. Will need to change GFO more frequently until find maintenance amount and frequency as apparent by numbers I do not have this dialed in yet.