When you missed something in the instructions, and the water goes sour, you need to get the spa back to a sanitary condition then start over.  It is impossible to get the
spa under control if you have bio-film bacteria, white algae, or black algae in the plumbing and filters.

If the water will not stay clear with standard care, then you have developed bio-film inside the plumbing.  It is bacteria colonies that have a self protective coating. 
You have to burn out all of that with strong chlorine treatment.
If you have an algae problem the water my be clear but you will see white stringy slimey material coming out of jets or on the shell.  With black algae it looks like greasy slime.

DO NOT USE THE  SPA UNTIL YOU HAVE DONE THIS.

1/ Remove the filters and place in a bucket of filter cleanse overnight then soak in bleach (1/4 cup per gallon of water) the next day.
Do not put the filters back in until you have done the remaining steps. If you are using the filter balls, then wash them in a normal bleach in your laundry machine.
We want to remove any possible "bio-film" from the filter surfaces.

2/ Drain the spa and refill (for bio-film condition)
For algae (water is clear but you have algae indications) you can just do the rest of the steps.

3/ Get the pH to 7.4

4/ Put in one cup of Chlorine concentrate per 400 gallons (1/2 for small spas 180 to 200 gallons), and set the spa for two long filter cycles.  Run the air pump and the jet pumps  at least three to four times during this clean out period for at least 10 minutes each run.
This gets the "dirty" water from the air lines out and allows the high chlorine water to enter. 

5/ After 24 hours put in 10 tablespoons of non chlorine shock and run for one hour.  Be sure to run the jets on high and the blower  at least one cycle.
Run for one hour then...... Add the amount of Spa Flush either or Jet Clean
Or an effective spa flush cleaner.

6/ Drain, refil, and put the clean and sanitized  filters in.  Follow the instructions exactly and if you have any questions about any part of the water care, contact us.

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