• Excessive contaminates
• Water out-of-balance
• Clogged or worn-out filter
• Low sanitizer level
• Activities of children

• Shock with Granular Dichlor
• Add Sea Klear clarifying agent
• Test and adjust pH level
• Clean or replace filter cartridge
• Check and/or adjust sanitizer level
• Change water.  Use Spa System Flush prior to draining
• Encourage children to use restroom and shower prior to entering hot tubs

Water turns milky-white from small bubbles, when jets running

• High contaminates and/or soap residues
• Buildups in spa plumbing system
• Low calcium water hardness
• Water out-of balance

• Add defoamer and scum digester such as Scum Buster
• Use ZorbO scum absorber
• Use Spa System Flush prior to each draining
• Add Hardness Increaser*
• Test and adjust pH level
• Clean or replace filter cartridge

*not needed if using Cleanwater Blue

• Incorrect sanitizer level
• Excessive chloramines
• Water out-of-balance
• Buildup of gasses under spa cover
• Overdose of non-chlorine shock
• Biofilm contamination
• Pseudomonas bacteria

• Test and adjust sanitizer level
• Superchlorinate with Granular Dichlor to eliminate chloramines
• Test and adjust pH level
• Open spa cover, run jets on full & allow spa to aerate for 5-10 minutes prior to use. Check non-chlorine shock level with MPS Test Strips
• Switch to odor-free alternative sanitizer system:
  Cleanwater Blue or Nature2
• Read more about Biofilm and Disinfection procedures to prevent skin rashes and eliminate Pseudomonas bacteria.

• Body oils, cosmetics, lotion residues
• Clogged or worn-out filter

• Add Scum Buster scum digester
• Use ZorbO oil scum absorber
• Clean or replace filter cartridge
• Clean water line with CleanAll non-foaming all-surface cleaner 

• Low sanitizer level
• Excessive contaminates

• Add Spa Algaecide*
• Shock-treat water with OxySpa
• Test and adjust sanitizer level
• Use an Ozonator

*not needed if using Cleanwater Blue

• Excessive mineral content
• Metal parts in equipment eroding
• Copper, iron or manganese in water being oxidized by chlorine, monopersulfate or ozone
• Low pH
• Low hardness level

• Add Stain, Scale, Metal Control*
• Test and adjust pH level
• Prefilter fill water with PreFresh
• Run filter continuously to remove material; clean filter
• Vacuum settled material from spa bottom with Shake-a-Vac
• Use sequestering clarifier such as Sea Klear for prevention

*if using Cleanwater Blue system, use only Cleanwater Purge for metal control

• Low sanitizer level
• Excessive contaminates
• Mold or mildew on underside of spa cover (may not be visible in early stages)

• Test and adjust sanitizer level
• Shock-treat water with OxySpa
• Change water & use Spa System Flush prior to draining
• Clean inside of spa cover & apply 303 Protectant
• Use an Ozonator

• Improper total alkalinity level
• High bather load

• Test and adjust total alkalinity
• Add pH Proper* pH holding agent to lock-in pH

*not recommended if using
Cleanwater Blue system

• Mineral content of water
• Well water

• Use a surface stain remover such as GLB TLC
• Use Stain, Scale, Metal Control* to minimize future problems
• Purify fill water with PreFresh Hose-end Prefilter

*if using Cleanwater Blue system, use Cleanwater Purge for metal control

• Sunlight damage
• Use of products containing silicone oil

• Use a spa cover protectant to greatly increase the life of your cover, such as 303 Protectant

• Abrasion from dirt & grit

• Remedy with a scratch-removal kit such as Novus
• Remove grit and debris with the Shake-a-Vac

• Sun damage, normal wear and tear

• Clean all surfaces with Clean All non-foaming spray cleaner
• Apply Gel Gloss polish to seal and restore luster to hot tubs and spas