@EASE SERENITY SYSTEM KIT CS of 12
About This Part
@EASE SERENITY SYSTEM KIT CS of 12 — a genuine Bullfrog Spas replacement part for spas and hot tubs. Part #10-3770.
This is an authentic Bullfrog Spas component, stocked and shipped by Sauna Company USA. Order genuine Bullfrog Spas part #10-3770 online with fast shipping, secure checkout, and expert support from our parts team.
- Manufacturer: Bullfrog Spas
- Part Number: 10-3770
- Category: Water Care › Water Treatment › Sanitizers & Oxidizers
- Availability: Regular Stock
Detailed Description
The Bullfrog @ease System Kit Simplicity is a self-regulating, low-maintenance water sanitization start-up kit designed specifically for Bullfrog Spas equipped with the flat, rectangular Simplicity Filtration System.
The 10-3770 system kit includes everything you need for a full month of clean, fresh spa water:
- One SmartChlor Simplicity Cartridge: Self-regulating chlorine cartridge that uses up to 75% less chlorine than traditional systems. It automatically maintains a low level of chlorine and slowly dissolves over 3 to 4 weeks.
- One Mineral Simplicity Cartridge: Works alongside SmartChlor to naturally condition the water, reduce odors, and kill bacteria. It lasts up to 4 months.
- One FROG @ease Jump Start Packet: A package of shock used to establish a fresh baseline upon initially filling the hot tub.1 Bottle of @ease Test Strips: Used for testing water chemistry to ensure everything is perfectly balanced.
Compatibility
- Fits: Flat, rectangular Simplicity Filter Housing systems
- Series: Designed for all Bullfrog M Series models and 2023+ A Series spas.
Key Benefits
- Fresh Mineral Water: Combines natural minerals and a low dose of SmartChlor to create softer, odorless water that is gentler on your skin, swimsuits, and spa equipment.
- Self-Regulating_ Because the chlorine self-regulates as needed, you spend significantly less time testing and adding chemicals to your spa.
- Ships from the USA
- Secure checkout
- Lowest price guaranteed
Related Water Treatment
Browse more: Water Treatment · All Bullfrog Spas parts
Technical Specifications
| Part Number | 10-3770 |
| Brand | Spa Parts |
| Item Type | Part |
| Category | 10-3770,Bullfrog Spas,Part #10-3770,Sanitizers & Oxidizers,Water Care,Water Treatment |
| Shipping Method | Standard parcel |
| Availability | In Stock |
Contact us to confirm compatibility with your specific model before ordering.
Installation Overview
General accessory installation — follow all manufacturer instructions included in the package.
- Verify compatibility with your specific model using the part number before installing.
- If electrical work is involved, engage a licensed electrician — do not bypass safety interlocks.
- Use only manufacturer-approved tools and hardware. Substitutions may void the warranty.
- Test the system at low settings first after any installation or replacement.
- Register the part with the manufacturer to activate the warranty.
Compatibility & System Requirements
This part is designed for use with:
- Spa Parts Products
Not sure if this fits your system? Contact us with your model number and we'll confirm before you order.
Frequently Asked Questions
Is this a genuine OEM part?
Yes. Sauna Company USA is an authorized dealer for Spa Parts. All parts sold are genuine OEM components sourced directly from the manufacturer or authorized distributor, not aftermarket substitutes.
How do I confirm this fits my model?
Match the part number (SKU) on the product against the parts list in your equipment's owner manual, or locate the data plate on your unit and compare the model number to the compatibility table above. If unsure, contact us with your model number before ordering.
Can I return this part if it doesn't fit?
Parts & accessories are non-returnable once opened — incorrect parts cannot be resold as new. Please confirm compatibility before purchasing. We're happy to help identify the correct part for your system.
How long will shipping take?
Standard parcel orders ship within 1–2 business days. Estimated transit is 2–5 business days depending on your location. Expedited options are available at checkout.
Shipping & Delivery
Standard parcel shipping — ships within 1–2 business days via UPS or FedEx.
- Tracking number emailed when shipped.
- Estimated transit: 2–5 business days depending on destination.
- Expedited shipping options are available at checkout.
- Orders placed before 5pm ET on business days ship the same or next business day.
Questions about your order? Email info@saunacompanyusa.com or use our contact page.
Warranty & Returns Policy
Manufacturer Warranty: This part is covered by Spa Parts's standard manufacturer warranty against defects in materials and workmanship. Warranty duration and terms vary by part type — refer to the documentation included in the package or contact us for details.
Returns: Parts & accessories are non-returnable once ordered. This policy exists because installed or opened components cannot be resold as new. Please verify compatibility thoroughly before purchasing — we're here to help.
Defective items: If your part arrives damaged or defective, contact us within 48 hours of delivery. We will arrange a replacement at no charge with proof of the defect (photos or video).
For warranty claims, visit our Warranty Claims page.