The only recommended pH balancers are pH Magic, sodium bicarbonate, sodium carbonate
and sodium bisulfate.

The Quick Start instructions for your Wooden Hot Tub.

At startup or drain and refill time:

1. Fill the spa by placing the garden hose in the tub.

2.Test the source water for calcium before putting in ions.     Click HERE for calcium test instructions.

3. Add 2 oz. Spa Defender or the appropriate amount of SequSol.

4. Test and adjust water for Total Alkalinity 80 PPM  and pH 7.4 .

5. Put in one tablespoon of Instant Ions per 150 gallons. Shake well.  Test the copper levels.

6. Turn on the air controls.

7. Cut (new) thermal blanket if needed.

8. Set filtering times to 8 to 12 hours per day. Place cover and let it heat.

9. Add the Calcium Booster (or premixed calcium carbonate in a bucket) after the spa is up to temperature.

Optional: add a bottle of pH Magic or 20 oz boric acid per 150 gallons, about one hour after the calcium has circulated. *Use only pH magic or boric acid with ions* 10. After each use put in one tablespoon chlorine  per one to three bathers, two table spoons for more than three.  If it starts to cloud up, add more next time.


1. Shock the spa with 4 tablespoons of Non-chlorine shock SeaKlear  and tablespoon of chlorine granular. 

2. Wait at least one hour, pump running on low or high, then test and adjust Copper, TA and pH.

3. Add one to two oz 4 in 1 Clarifier, and Spa Defender of SequaSol.

New wood tubs click here.

1 Clean filter(s) by spraying them off with small nozzle ( sweeper nozzle ) cold water. Soak in bleach solution 3 minutes.


1. Clean cover and apply 303 cover treatment to the cover.

3 to 6 months:

1. Drain and refill the spa. Deep clean the filters by soaking overnight in Filter Cleanse, or other acid filter cleaner.

2. Apply Super Deck stain to the redwood or cedar outside the tub not inside.

Cleaning the tub:

Do not use chlorine to clean the wood.  That will destroy the face of the wooden fibers and make a worse mess of the wood.  Wood is an organic material and chlorine destroys organic matter.

Use a scrub brush or a terry towel to wipe the tub.   If it needs further cleaning use baking soda, and sprinkle that on a wet terry cloth, then wipe the inside walls with that.   If there are stubborn calcium deposits, use pH down on a wet terry cloth towel and wipe the wall with that.
Rinse the wall with water and flush the water out of the tub.   Don't leave the pH down on the wall too long.    Do not use any cleaners with phosphates or soap.    The scrub brush and water is the best.  Keeping the water balanced, using a sequestering agent ( Spa Defender or Sequsol) and regular shock and chlorine use is the best way to keep the tub clean.  That way you only have to wipe the tub at the water line.

Back to Standard Instructions