How to use CV-600 and CV-700

Learn how to correctly use CV-600 Enzyme and CV-700 Enzyme + Phosphate Remover. Doses, how to add, and mistakes to avoid.




CV-600 and CV-700 are our enzyme products. They are designed to break down and remove non-living organics and oils from water. When used as directed, Orenda enzymes effectively work with chlorine and remove the non-living oxidants that chlorine would otherwise have to deal with on its own. This helps maintaining the pool clean and it results in stunning water clarity.

Related: Organic waste and carbon management (Pillar 2)

Related: How to Implement the Orenda Program

You may want:

  • Plastic measuring cup (for liquids)

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CV-600 and CV-700 dosing (per 10,000 gallons/38,000 Litres)

First of all, both CV-600 and CV-700 are the same enzyme. The only difference between the two is that CV-700 has a phosphate remover blended into it. They use the exact same dosing.

Enzymes work best when there is a residual level of them in the water. For this reason, simply using the weekly dosing may not yield the desired results, though it depends on the non-living organics (bather load) in the water. We strongly recommend an annual purge dose of one quart (32 fl.oz. / 0.94 L) per 10,000 gallons (38,000 L) of water. One week after that initial purge dose, begin the weekly maintenance dosage.

Most residential pools do not have a heavy enough bather load to need more than about 5 fl.oz. per 10,000 gallons per week of CV-600 or CV-700. Recommended weekly maintenance is between 2 and 5 ounces per 10,000 gallons per week. Note: The Orenda App's dosing calculator dose is based on the volume of the pool inputted. It shows 5 fl.oz. per 10,000 gallons as the weekly dose for residential pools. For commercial pools, it shows 10 fl.oz. per 10,000 gallons.

Use your judgment for dosing based on the bather load in that pool. And it goes beyond bathers. The organic load includes tree droppings, grass clippings, etc.

Bather Load

Weekly dose per 10,000 gallons (38,000 L)
Light (<5 bathers a week, residential) 2 fl.oz. (60 mL)
Moderate (5-20 bathers a week, residential) 5 fl.oz. (148 mL)
Heavy (average commercial, dogs or big party for residential, etc.) 10 - 12 fl.oz. (0.3 - 0.35 L)
Extreme (waterparks, swim schools, swim team practices, etc.) 20+ fl.oz. (0.6+ L)

Specific enzyme doses for procedures

Enzymes are key in many Orenda procedures. Below is a table showing enzyme doses for those procedures. You will see most of them are the normal purge dose, because weekly dosing is only meant to maintain an enzyme residual, not create one:

Procedure CV-600/700 dose per 10,000 gallons (38,000 L)
Normal Purge 32 fl.oz. (0.94 L)
Green pool cleanup 32 fl.oz. (0.94 L)
Sand filter purge 32 fl.oz. (0.94 L) per standard commercial sand filter (based on TR-140)*
"The Orenda Bomb" 32 fl.oz. (0.94 L)
The Orenda Startup™ 32 fl.oz. (0.94 L)
Opening/Closing 32 fl.oz. (0.94 L)
White Fly Treatment 64 fl.oz. (1.9 L)

*Filter purge dose depends on the size of the filter, but always a 4:1 ratio with PR-10,000.


Ways to add CV-600 and CV-700

Enzymes can pretty much be poured anywhere in the pool, though we prefer them to be put into circulation immediately.

Pouring. You could pour CV-600/700 around the pool perimeter, or directly into the skimmer or gutter. For gutter pools with surge tanks or vacuum sand filters, add the enzymes directly to the surge tank. 

Automating. Commercial pools–and some high-end residential pools with chemical automation–may have the ability to put CV-600/700 on an automated feed pump. While enzymes can be added anywhere in the circulation sequence, we recommend they be added before the filter.


Filtration and other considerations

Enzymes are known to improve filtration and reduce the buildup of oils and other non-living organics in the filter media. This can extend time between filter cleanings. Generally speaking, our enzymes are great with every type of filter, with one notable exception.

We advise against using CV-700 on pools with DE filters, because the phosphate precipitate dust can build up pressure in DE filters. If you want to remove phosphates, we recommend using PR-10,000 instead, and either shut off circulation and vacuum the dust, or time the treatment one day before a DE filter cleaning and media dump.


Mistakes to avoid

  • Overdosing CV-600 or CV-700 is harmless, but will likely cause bubbles and foaming.  The foaming will go away in a matter of hours, but it's wise to measure the dose and not overdose.
  • Do not add full pool doses of enzymes into a hot tub, as the added heat and aeration can cause foaming to occur. Use small doses, or consider using CE-Spa Clarifier instead.
  • Do not let CV-600/700 (or any other Orenda product, for that matter) freeze. Store in a climate-controlled area.


Other uses for CV-600 and CV-700 enzymes

Our enzymes have been used to clean up oil messes in a variety of applications. While we do not know the exact procedures, we have heard from several customers who use it to clean oil spills off concrete floors, equipment, and even clothing. It also makes for an excellent cartridge filter cleaner.