Operational Management Plan 2015

5.2 Water quality reaction plan

Water         quality Low         High       Emergency Plan
Parameter             setpoint    setpoint
PH                    7.8         8.2        Manually test and adjust with
                                             Hydrated lime to increase PH or
                                             Hydrochloric Acid to decrease PH
Ammonia (TAN)         N/A         1ppm       Inspect grow tanks for dead fish
                                             Inspect Bio filter for correct
                                             operation.
                                             Reduce feed rate equal to the
                                             date of last acceptable ammonia
                                             test. Increase feed rate at slower
                                             rate to allow bio filter bacteria to
                                             grow. If ammonia levels increase
                                             to high levels ensure there is
                                             enough bio media in bio filter.
Nitrite NO2           N/A         1ppm       Check De nitrification tank for
                                             correst dosing of carbon donor
                                             and ORP level correct to ensure
                                             there is no nitrite build up in de
                                             nitrification tank outlet.
                                             Inspect Bio filter for correct
                                             operation.
                                             Reduce feed rate equal to the
                                             date of last acceptable ammonia
                                             test. Increase feed rate at slower
                                             rate to allow bio filter bacteria to
                                             grow. If ammonia levels increase
                                             to high levels ensure there is
                                             enough bio media in bio filter.

Nitrate NO3           N/A         200ppm     Check denitrification for correct
                                             operation. Check for correct ORP
                                             reading. Ensure at 3% of system
                                             water     is  being    discharged.
                                             Decrease feed rate until solution
                                             is found.
ORP     (Outlet   of +300mv       +350mv     If below 300mv check ozone
protein skimmer to                           generator for correct operation
control       ozone                          including ORP Probe. Check
output)                                      oxygen generator that produces
                                             oxygen for the ozone generator.
                                             If above 350mv turn ozone
                                             generator off immediately. Check
                                             ORP probe and recalibrate then
                                             turn on ozone generator and
                                             monitor for correct operation.
ORP (de nitrifying -50mv          +50mv      If below -50mv check dosing
tank to   control                            pump for correct operation and