SPECTRA CT-MKII-300-12 Desalination Watermaker Mkii 12V

( Brand: Spectra ), ( Manufacturer Part Number: CT-MKII-300-12 )

Review SPECTRA Mkii 12v Gal Per Day Desalination Watermaker fits CATALINA MARINE 300

The Spectra Ct-Mkii-300-12 Catalina 300 Mkii Marine 12V Gal Desalination Watermaker is a high-performance, compact reverse osmosis (RO) system designed specifically for use on boats and other marine applications. This powerful watermaker can produce up to 300 gallons per day, making it an ideal solution for larger vessels or extended cruises.

The system operates on 12V DC power, making it easy to integrate with your boat's electrical system. It features a robust, fiberglass-reinforced, molded housing that is built to withstand the rigors of the marine environment. The housing is also insulated to help maintain optimal operating temperatures and ensure efficient water production.

The Ct-Mkii-300-12 uses a state-of-the-art membrane technology that can filter out over 99.9% of total dissolved solids (TDS), making the water safe for consumption. The system includes a pre-filter, a sediment filter, and a carbon block filter to help protect the RO membrane from contaminants and extend its lifespan.

The watermaker features a user-friendly design with a digital display that shows key operating information, such as flow rate, production volume, and membrane life. It also includes a built-in, self-cleaning feature that helps to maintain the system's performance and prevent scale buildup.

The Spectra Ct-Mkii-300-12 Catalina 300 Mkii Marine 12V Gal Desalination Watermaker comes with a comprehensive installation kit that includes all necessary components, such as hoses, fittings, and mounting hardware. The system is also backed by Spectra's industry-leading warranty, which covers parts and labor for one year.

Overall, the Spectra Ct-Mkii-300-12 Catalina 300 Mkii Marine 12V Gal Desalination Watermaker is a high-performance, reliable, and easy-to-use solution for producing fresh water on your boat. Whether you're cruising the coast or sailing across the open sea, this watermaker will help ensure that you always have a clean, fresh water supply on board.

The Spectra CT-mkII-300-12 Catalina 300 MkII Marine 12V Gal Desalination Watermaker is a reverse osmosis system designed for boats and RVs, providing fresh water from seawater or brackish water sources. Here are some pros and cons to help you make an informed decision about purchasing this watermaker:

1. Reliable and Efficient: The Spectra CT-mkII-300-12 is known for its robust design and high-performance membranes, which can produce up to 300 gallons per day. This makes it an ideal solution for boats and RVs with large water capacities.

2. Compact and Portable: Despite its impressive output, the watermaker is relatively compact and lightweight, with dimensions of 19.5 inches (L) x 14 inches (W) x 14 inches (H) and a weight of 49.6 pounds. This makes it easy to install on most boats and RVs.

3. Low Maintenance: The watermaker features a self-cleaning membrane, which reduces the need for manual maintenance. This can save time and effort for boat and RV owners.

4. Flexible Installation: The Spectra CT-mkII-300-12 can be installed in various ways, including directly on the transom or on a tabletop. It also comes with a 12V DC power cord and a remote pressure gauge, making it easy to install and operate.

5. Durable Construction: The watermaker is built with marine-grade materials, ensuring that it can withstand the rigors of life at sea.

1. Expensive: The Spectra CT-mkII-300-12 is a premium watermaker, and its price reflects its high performance and durability. This may be a barrier for some boat and RV owners with limited budgets.

2. High Power Consumption: The watermaker requires a significant amount of power to operate, which can put a strain on the boat or RV's electrical system. This may require upgrading the electrical system or installing additional batteries.

3. Requires Pre-filtration: The watermaker requires pre-filtration to remove larger particles and debris from the water source. This may require additional investment in filters and pre-filtration systems.

4. Limited Warranty: The watermaker comes with a limited warranty of one year, which may be shorter than some competitors' warranties.

The Spectra CT-mkII-300-12 Catalina 300 MkII Marine 12V Gal Desalination Watermaker is a high-performance, compact, and portable watermaker that can provide fresh water from seawater or brackish water sources. Its robust design, self-cleaning membrane, and flexible installation options make it a popular choice among boat and RV owners. However, its high price, power consumption, and limited warranty may be drawbacks for some.

If you are looking for a reliable and efficient watermaker for your boat or RV, the Spectra CT-mkII-300-12 is definitely worth considering. However, you should also take into account the additional costs of pre-filtration systems, electrical upgrades, and potential maintenance costs. Ultimately, the decision to purchase this watermaker depends on your specific needs, budget, and priorities.

If you are in the market for a watermaker for your boat or RV, the Spectra CT-mkII-300-12 is a solid choice that offers high performance, durability, and flexibility. However, if the high price is a concern, you may want to consider alternative options such as the Spectra Newport 150 or the Katadyn Survivor 18. These watermakers offer lower output but are more affordable and still provide reliable fresh water from various water sources. Ultimately, the best watermaker for you will depend on your specific needs, budget, and priorities.

part # ctmkii30012 price

• $5999.95

specifications vesselvent:

• for models: Marine, 300, Catalina
• brand: Spectra
• manufacturer part number: CT-MKII-300-12

offer vesselvent:

• quantity: 1
• availability: In Stock
• sold: 0
• options: Seller-arranged-local-pickup
• started: March 23, 2026

returns vesselvent:

• policy: No Returns

payments vesselvent:

• cash
• other
• wallet: Paypal
• credit card: Discover

seller vesselvent:

• # reviews: 9334
• rating: 99.6%

shipping vesselvent:

general vesselvent:

• Parts Accessories > Boat Parts > Plumbing Ventilation
• condition: Used

Spectra CT-MKII-300-12 Is Similar To:

• Spectra Ventura 150/200r Watermaker - T -12. Serial Number 8356 (33.3% similar) $31.89–$175.70. (October 9th, 2024)
• Spectra Vt-150-d-12v 150-d-12-volt Marine Watermaker Complete Working System Mfr In 2012 (38.9% similar) $1950.00. (March 28th, 2025)