2 oz. Swim Spa Enzyme Concentrate

“I just wanted to share how much I like Waters Choice. My swim spa stays crystal clear and no nasty chlorine/chemical odor. Simple, simple, simple to use! Great Results!” Donna

Our Swim Spa Enzyme Treatment is formulated for swim spas 1,200 gallons or more. This tiny little bottle is a super concentrated formula that will last 6 months. To get your swim spa started off right, add 2 bottles (1,500 gallons or smaller) or 3 bottles (over 1,500 gallons) of our Pure Enzymes for Spas. These bottles will take care of your spa for the first month. After that, switch to the concentrate and add one capful every other week.



Swim Spas are a cross between pools and spas. This means the temperatures, gallons, and use are different.  Therefore, the treatment and how you take care of your swim spa will also be different.
Because swim spas have long water lines under them, if a water line is shut off the water will get stagnate and gunk will start to build up. To prevent this from happening it is very important to make sure there is good flow through all the lines when not in use.
Tip: Make sure you center your diverter valves
and open water falls or spouts when you get out of your spa.
Only Drain and Refill your Swim Span Every 3-5 Years

Traditional chemicals require you to drain and refill once every year.

What Do I Need?
Pure Enzymes for spas
2 oz. Swim Spa Concentrate
pH Increaser
pH Decreaser
Test Strips

Starter for the enzymes
Does most of the work
Raises pH
Lowers pH
Assists in keeping your water clean
Know where your levels are



Easy Startup Instructions

  1. Fill your new swim spa with clean water (no irrigation water).
  2. Turn spa on and set filtration to a minimum of 8 hours/day for the first 6 weeks.
  3. Set heat to desired temperature.
  4. Clean filters 1x per week for the first 6 weeks! After that, clean every other week.
  5. Check pH and alkalinity and adjust if needed.
  6. Wait for spa to warm up.
  7. Check pH and alkalinity again and adjust if needed.
  8. Add 2 bottles of 12oz. PURE ENZYMES for Spas if swim spa is <1500 gallons.  Add 3 bottles of  12oz. PURE ENZYMES for Spas if swim spa is >1500 gallons. This is a one time, first month only treatment.
  9. Add sanitizer (follow recommended label rates).
  10. After the first month, switch to the 2 oz. Waters Choice SWIM SPA Enzyme Concentrate (blue bottle with white cap). Add 1 capful every other week from then on – even after a drain and refill.
  11. That's it! This enzyme treatment is doing most of the work keeping your spa clean. Make sure to add it consistently per directions!
  12. Use your new swim spa
  13. If, at any time, you have questions regarding your water care, please contact us at

Full Startup Instructions

Welcome to Waters Choice. Thank you for choosing our water treatment system. You will now be enjoying your swim spa in a healthy, clean environment without all the hassle! These instructions are written to address the day to day use of Waters Choice enzymes and the potential challenges.

Starting up.

You can use your existing water regardless of the chemical system you used previously. If your swim spa is running on a Salt Generator, you can turn your generator to the lowest setting.

For the first 6 weeks - CLEAN YOUR FILTERS WEEKLY with a pressure nozzle on your garden hose.

Test your pH and Alkalinity using a standard test strip, balance as needed. Also, make sure your Calcium Hardness is at your swim spa manufacturers recommended level. We prefer the calcium level lower than normal. Now add your first month’s enzymes - 2 bottles of the 12 oz. PURE ENZYMES for Spas if your swim spa is less than 1500 gallons OR 3 bottles if your swim spa is greater than 1500 gallons. After the first month, you will add 1 capful of Waters Choice SWIM SPA Enzyme Concentrate (little blue bottle with white cap) every other week. Yes, we know it appears to be a tiny amount. You will NOT need to use the 12 oz. bottles again, even if you drain and refill your spa. Along with the enzymes, follow recommended label rates of Waters Choice Sanitizer.

Frequently Asked Questions:
My spa went cloudy after we started on Waters Choice.

It’s common for swim spas to go cloudy when starting with Waters Choice enzymes. This can be caused by several issues but most commonly it is organics from the swim spa plumbing being loosened up into your water. We recommend adding 1 TBL. of Sanitizer every other time you use your swim spa when this condition occurs to ensure that there are no harmful bacteria present during the startup process. It will typically clear up in 2 - 3 weeks when the Waters Choice enzyme system is set up in the spa.

My Water has an odor.

As the enzymes break down organics carbon dioxide is created and gets trapped between the cover and the water which can give your swim spa a musty smell. Most of the time this will go away after the cover has been opened for a minute or two. If the smell sticks around longer than that, check the filter by giving it a sniff. If you smell the odor in the filter soak in a solution of bleach water, (about 1 cup/filter in the water it takes to cover the filter), then rinse. Also check that you don’t have the smell in the pillows and cover. If you do, rinse with the same bleach solution.

I have a green tint in my water.

Most of the time water that is clear with a tint of green is from algae. There are a couple of ways to take care of this. 1. Check your waters for phosphates, they are a food source for algae and could be the cause of the problem. 2. Increase the amount of chlorine you are adding.

I have small particles floating in my water.

Because swim spas have long lines of plumbing it is possible for buildup to occur and the enzymes will release these buildups into the water. One method of minimizing this problem is to make sure all the jets are open to insure water flow during filter cycles. When you are in your spa run the pumps on high speed and flush all the lines thoroughly.

My cover is slimy.

Enzymes are breaking down organics that are on the surface. Wipe your cover down with a mild water and bleach solution.