ThermoSpas Atlantis Genesis 200, Owner'S Manual

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Safety Cover

 - A spa cover which meets strict ASTM standards for strength, construction, and 

anchoring, which reduces the drowning risk to small children. (Our covers are built to the ASTM 

safety standard). Not all hot tub covers on the market meet this important rating.

Sanitize

 - Means to kill all bacteria, algae, disease-causing organisms, and any other uninvited 

guests. One important job of any sanitizer is to provide a sanitizer residual, a level of sanitizer 

that hangs around (resides) in the water for some period of time to destroy any living organisms 

as they are introduced into the hot tub.

Scale

 - Forms on surfaces in contact with water when the calcium hardness, pH or total alkalin-

ity levels are too high. Scale may appear as grey, white or dark streaks. It may also appear as a 

hard crust around the tile.

Sequestering Agent

 - A sequestering agent ties-up minerals tightly in solution, preventing their 

precipitation, which colors the water and/or stains the spa. Use Stain and Scale, Protection Plus 

and/or Natural and Clear.

Shock

 - This word is used two ways in the pool and spa industry. As a noun it loosely describes 

the products used in shocking, such as hypochlorites, potassium permonysulfate or hydrogen 

peroxide. As a verb it describes the act of bringing the sanitizer level up so high that breakpoint 

chlorination is reached. When breakpoint is reached, a “shock” or perhaps a “lightning bolt” is a 

better analogy, is sent through the water, tearing apart molecules and slashing through cell walls. 

Skimmer

 - A surface skimmer is a plumbing fitting set at water level, containing a weir mecha-

nism and a debris basket. The skimmer is part of the suction side circulation system.

Skimmer Basket 

- Beneath the lid, the basket strains debris, as the first line of defense in filter-

ing the water.

Sodium Bicarbonate

 - Another base, however its properties will increase alkalinity more than 

pH. Used to raise total alkalinity levels.

Sodium Bisulfate

 - An granular form of acid, used to counteract a scaling condition by lowering 

pH and/or alkalinity.

Spa Cover Conditioner

 - This product is specially formulated for vinyl spa covers. It will not dry 

out vinyl as automobile cleaners might. “Spa Cover Conditioner” will deep clean your cover while 

providing a bright, durable shine that will inhibit harmful UV rays.

Spa Fragrance

 -  Special perfumes designed to enhance the hot tub experience and overcome 

chemical odors. These are designed for spas, and will not alter water balance or clog filters.

Stain and Scale

 - A metal sequestering agent used to keep mineral and metal deposits from 

forming on spa equipment.

Superchlorination

 - Applying 7 - 10 times the normal amounts of chlorine to the spa as an add-

ed “boost” for contaminant removal. Some refer to superchlorinating as being less than shocking, 

in that breakpoint thresholds are not reached, or the terms may be used synonymously.

Test Strips

 -  Easy-to-use dip strips for measuring the pH, total alkalinity and sanitizer levels of 

spa water. Strips are also available for testing water hardness and Total Dissolved Solid levels.

ThermoGloss

 - This product is an acrylic gloss that provides a tough coating to protect your 

shell from scratches and scale build up. Designed for hot water environments, this product will 

not break down and cause problems in spa water.

Glossary