Neutralizers 2.5 Cubic Foot: Use 200 Lbs Calcite And 20 Lbs Corosex; Troubleshooting The 7800 Neutralizer Filter; Ph Is Too High; Ph Is Too Low - Clean Water Systems 7800 Installation & Start?Up Manual


Corosex 10 lbs (1 10 lb boxes) .13 cu ft
Neutralizers 1.5 Cubic
Your new 1.5 Cubic Foot Neutralizer Blend filter includes:

Calcite 150 lbs (3 50-lb boxes) 1.65 cu ft

Corosex 10 lbs (1 10 lb boxes) .13 cu ft
Neutralizers 2.0 Cubic Foot:
Your new 2.0 Cubic foot Neutralizer Blend filter includes:

Calcite150 lbs (3 50-lb boxes) 1.65 cu ft

Corosex20 lbs (2 10 lb boxes) .26 cu ft
Neutralizers 2.5 Cubic Foot:
Your new 2.5 Cubic Foot Neutralizer Blend filter includes:

Calcite 200 lbs (4 50-lb boxes) 2.2 cu ft

Corosex 20 lbs (2 10 lb boxes) .26 cu ft

Troubleshooting the 7800 Neutralizer Filter

pH is Too High!

If the pH after your neutralizer is greater than 8.5, your pH kit may turn the color of the reagent, a
purple color. This is nothing to be alarmed about. In some cases, too much Corosex added to the
neutralizer-Calcite-Corosex blend can cause this problem; it almost never happens with Calcite only
systems. If this happens, set the backwash cycle frequency to every night for a couple of weeks, which
will cause the media to be washed more thoroughly and use up the excess Corosex. Alternatively, you
can manually backwash it several times on a given day, etc. Secondly, you can open up the bypass
valves slightly, and allow some untreated water to lower the pH by blending in some lower pH water.
When you go to add more media in 6 to 12 months, just add less Corosex.

pH is Too Low!

This can happen if the water entering the neutralizer has a pH less than 6.0. Generally the water after
your neutralizer should have a pH of 7.0, and the pH reagent in your pH test kit should turn a light green
to darker green depending on the pH. Give your neutralizer some time, and after several weeks, if the
pH is still coming out less than 7 and the test reagent is yellowish in color, you may need to add some
Corosex to the neutralizer tank to raise the pH. Contact our office if you don't have any Corosex on
Page 14
7800 Neutralizer Installation & Startup Guide
Foot:use 150 lbs Calcite and 10lbs Corosex
use 150 lbs Calcite and 20lbs Corosex
use 200 lbs Calcite and 20 lbs Corosex
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