
Sirona® Simply Waterline Control
Product Overview
The standard specification for preventing greasy scum rings and mineral buildup in biguanide spa systems.
Packaged in a convenient 1 Quart bottle, Sirona Simply Waterline Control is formulated to prevent oily film and stubborn waterline deposits without chlorine or bromine. Serving as step one in the biguanide routine, this specialty formula keeps acrylic surfaces clean and reduces manual scrubbing. For best results follow the Sirona Simply Spa Care 3 step system.
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Benefits & What Makes It Different
Biguanide System Compatible
Engineered specifically for non-chlorine and non-bromine hot tubs, integrating cleanly with biguanide sanitizers.
Waterline Deposit Prevention
Actively binds organic oils and mineral scale to stop scum lines from adhering to spa shell surfaces.
Economical Maintenance Dosing
Requires just 3/4 ounce per 150 gallons weekly to maintain pristine surfaces with minimal effort.
Product Details
Bis (hydrogenated tallow alkyl) dimethyl quaternary chlorides, Bis (hydrogenated alkyl methyl amines) hydrochloride
Startup: 1.5 oz per 150 gallons; Maintenance: 0.75 oz per 150 gallons weekly
Compatibility
- Compatible with biguanide sanitizing systems
- Not compatible with chlorine or bromine systems
When To Use This
Pro Tip
Always turn off air blowers before dosing to prevent foaming, and ensure water is heated to operating temperature (98-104°F) so the solution mixes cleanly without temporary cloudiness.
Common Questions & Instructions
How much Sirona Simply Waterline Control should I add at spa startup?
With blowers turned off, add 1-1/2 ounces of solution for every 150 gallons of spa water during your initial fill and startup.
Can I use Sirona Simply Waterline Control with chlorine or bromine?
No, this product is designed specifically for biguanide spa systems and should not be used in pools or hot tubs treated with chlorine or bromine.
Why does my spa water turn cloudy after adding Waterline Control?
If water is cold, the solution can cause temporary haze; once heated to regular spa temperatures (98-104°F), the cloudiness quickly clears.
Delivered today to your DFW neighborhood
Order this item by 2 PM Central on a weekday, and we'll have it on your driveway by evening. Same-day delivery is FREE to every ZIP in our DFW coverage area — no minimum — or it's free with our weekly service plan.



