Bob999
Reporter
I have a backwashing acid neutralizer with a 12 x 48 tank.
My question is how much Calcite media should be maintained in the tank?
My question is how much Calcite media should be maintained in the tank?
A 12 x 48 inch tank will have 2 cuft (or about 200 lbs) of calcite in it. It will have about 20 pounds of gravel at the base.
The tank should be about 2/3 full or a minimum of 24" bed depth. Is it mixed with corosex or just calcite. What is your raw pH?
Andy Christensen
Yew, the Calcite alone would work fine. I suppose your pH raises to around 7.3-.4? Can you desribe your water usage. # of people, baths, plumbing diameter before and after the filter. Have you tested for hardness before and after?
Andy
A properly sized neutralizer should have to be filled once a year to the correct level. Most neutralizers need a re bed every 2 years.
wellexpert
I've sold many AN filters over the last 22 years and I've never had a customer have a problem with channeling, probably because the backwash is done properly and frequently enough to prevent channeling. Backwashing is the only way to cure channeling.
That will also prevent "impurities" from getting down in the bed. But what are these impurities actually?
Depending on how many people and any iron, backwash it every 3-4 days. Two people no iron, 4-6 days.
The 7 gpm may be too small.
What brand and model control valve are you using?
IIRC 2.0' doesn't come with a TDH tank right? You need bed depth, not a wider column.
I'd go 14-16 minutes if one backwash and then 6-8 minutes rinse. If two backwashes 6-8 and then 6-8 again and 6-8 rinse.
This is awkward, but...
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