RED SEA RRS40318 Aquarium Circulation Pump Washers 730773403189 250

( Brand: Red Sea ), ( Manufacturer Part Number: RRS40318 ), ( Part Type: Pump Washer ), ( Country Of Origin: China ), ( UPC: 730773403189 )

Review RED SEA Max 250 Aquarium Two Replacement Circulation Pump Washers 40318

The **Sea RRS40318 250 Aquarium Circulation Pump Washer** is a high-performance, precision-engineered unit designed to elevate the efficiency and reliability of recirculation systems in marine and freshwater aquariums, sumps, and protein skimmers. Built with Sea s signature durability and innovation, this compact yet robust pump features a **250-watt motor** capable of delivering a powerful flow rate of up to **2,500 liters per hour (660 gallons per hour)**, making it ideal for medium to large aquariums requiring consistent water movement, oxygenation, and debris transport. The pump s **impeller-driven design** ensures smooth, pulsation-free circulation, reducing stress on delicate aquarium inhabitants while maintaining optimal water flow through filtration systems, skimmers, or sump chambers. Constructed from **marine-grade materials**, including a corrosion-resistant housing and seals, the RRS40318 is engineered to withstand prolonged exposure to saltwater, freshwater, and chemical treatments, ensuring longevity even in demanding environments.

One of the standout features of this pump is its **modular, washable impeller system**, which allows for effortless maintenance without disassembling the entire unit. The impeller can be quickly removed, cleaned, and replaced, minimizing downtime and preventing clogs that could disrupt critical circulation. This design also extends the pump s lifespan by reducing wear and tear on internal components. The unit s **adjustable flow control** enables users to fine-tune water movement to suit specific aquarium needs, whether balancing flow in a reef tank, enhancing oxygenation in a fish-only setup, or ensuring efficient debris transport in a sump. Additionally, the pump s **low-noise operation** and compact footprint make it an unobtrusive yet highly effective addition to any aquarium setup, blending seamlessly into both visible and hidden installations.

For aquarists seeking reliability and performance, the Sea RRS40318 combines **precision engineering with practicality**, offering a versatile solution for recirculation needs. Whether integrated into a protein skimmer, sump, or direct circulation loop, this pump delivers consistent, high-efficiency performance while requiring minimal maintenance. Its robust construction and adaptable design make it a trusted choice for hobbyists and professionals alike, ensuring that water flow remains smooth, controlled, and free of interruptions ultimately contributing to a healthier, more stable aquatic environment.

The **Sea RRS40318 250 Aquarium Circulation Pump Washer** is a popular choice for maintaining water flow and filtration in marine aquariums. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

---

### **Pros**

1. **Effective Water Circulation** The pump is designed to enhance water flow, which is crucial for distributing oxygen, nutrients, and removing waste particles. This helps prevent stagnation and promotes a healthier environment for marine life.

2. **Compact and Space-Efficient Design** The unit is relatively small, making it suitable for aquariums with limited space. It can be mounted on the side or top of the tank without taking up much room.

3. **Adjustable Flow Rate** The pump allows for some degree of flow control, which can be useful for fine-tuning water movement to match the needs of specific tank setups or inhabitants.

4. **Durable Construction** Sea (now part of AquaMedic) is known for producing reliable marine equipment. The RRS40318 is built to withstand the demands of a saltwater environment, with materials resistant to corrosion.

5. **Easy Installation** The pump is straightforward to install, typically requiring only basic plumbing connections to the return line or filter system. It often comes with clear instructions.

6. **Low Noise Operation** Compared to some larger or less efficient pumps, this model operates relatively quietly, which is beneficial for maintaining a peaceful aquarium environment.

7. **Compatibility with Marine Systems** It is designed to work seamlessly with marine filtration systems, including protein skimmers, sumps, and other circulation setups commonly used in reef tanks.

8. **Energy Efficiency** The pump is designed to operate efficiently, consuming relatively low power while providing adequate flow for its rated capacity (250 GPH).

---

### **Cons**

1. **Limited Flow Rate for Larger Tanks** The 250 GPH (gallons per hour) flow rate may be insufficient for very large or high-flow systems, such as oversized reef tanks or those with multiple high-demand components (e.g., large protein skimmers or heavy bioloads). It may require additional pumps for adequate circulation.

2. **Potential for Clogging** Like all circulation pumps, the RRS40318 can clog if debris or fine particles enter the impeller or intake. Regular maintenance, such as cleaning the filter media or pre-filtering water, is necessary to prevent this.

3. **No Built-In Pressure Gauge or Flow Meter** Without a built-in gauge, monitoring the exact flow rate can be challenging. Users may need to rely on external flow meters or visual cues, which can be less precise.

4. **Dependence on Proper Installation** If not installed correctly (e.g., improperly aligned or with kinks in the tubing), the pump may not perform optimally or could even damage the system. Proper plumbing and positioning are critical.

5. **Replacement Parts Availability** While Sea/AquaMedic products are generally reliable, replacement parts (e.g., impellers or seals) may not always be readily available compared to more widely used brands. Checking compatibility before purchase is advisable.

6. **Not Ideal for Freshwater Systems** This pump is specifically designed for marine environments. Using it in freshwater setups could lead to corrosion or reduced lifespan due to the lack of saltwater protection.

7. **Price Relative to Alternatives** While not excessively expensive, the cost may be higher than some generic or less feature-rich pumps. For users on a tight budget, there may be cheaper alternatives with similar functionality.

---

### **Conclusion**

The **Sea RRS40318 250 Aquarium Circulation Pump Washer** is a solid choice for marine aquarists seeking a reliable, compact, and efficient circulation solution. Its strengths lie in its durability, ease of use, and compatibility with marine systems, making it well-suited for smaller to mid-sized reef tanks. However, its limited flow rate and lack of built-in monitoring features may pose challenges for larger or high-demand setups. Additionally, regular maintenance is required to prevent clogging and ensure longevity.

---

### **Recommendation**

- You have a **small to medium-sized marine aquarium** (e.g., 50 150 gallons) and need supplemental circulation.

- Your tank setup includes a **protein skimmer or sump** that benefits from additional flow.

- You prioritize **reliability and ease of installation** over advanced features like flow meters.

- You are willing to perform **regular maintenance** (e.g., cleaning the filter media) to keep the pump running smoothly.

- Your tank requires **higher flow rates** (e.g., 300 GPH or more), in which case a larger pump (e.g., Sea RRS40320 or similar) may be needed.

- You want **built-in monitoring** (e.g., a flow meter or pressure gauge), which this model lacks.

- You are working with a **freshwater system**, as this pump is marine-specific.

- You prefer **budget-friendly options** and are open to generic brands with similar functionality.

For most marine aquarists looking for a dependable circulation pump, the **Sea RRS40318 is a strong and practical choice**, provided the tank size and system demands align with its capabilities. Always ensure compatibility with your existing setup and follow manufacturer guidelines for installation and maintenance.

Details:

Two replacement Red Sea Max 250 Aquarium Circulation Pump Washers. Red Sea Part # 40318.

part #: rrs40318 price

• $12.98

specifications fishpumpswater:

• brand: Red Sea
• mpn: Rrs40318
• part type: Pump Washer
• country of origin: China
• upc: 730773403189

payments fishpumpswater:

• wallet: Google-pay
• other
• cRedit card: Visa

returns fishpumpswater:

• paid by: Buyer
• method: Money back
• time: 60 Days
• policy: Returns Accepted

offer fishpumpswater:

• options: Ship-to-home
• best offers: True
• quantity: 1
• availability: In Stock
• sold: 0
• started: May 29, 2026

general fishpumpswater:

• condition: New
• Pet Supplies > Fish Aquariums > Pumps Water

seller fishpumpswater:

• rating: 100.0%
• # reviews: 105
• city: Tempe, Arizona

shipping fishpumpswater:

• cost: $0.00
• service: Flat Rate Freight
• type: Fixed
• class: Freight

Red Sea RRS40318 Is Similar To:

• 033050 Pump Red Microprocessor Controller Wavemaster Pro Sea (19.9% similar) This nick doesn't affect anything. Up for your consideration is austere Sea wave master pro...(November 8th, 2014)
• 042055332101 Red Sea Calcium Pro Test Kit Titration (38.2% similar) Package size volume: 75 tests free shipping in the us. Specifications: test type: nitration accuracy: 5PPM iterator included inside - easy to use, single hand and high precision. This test kit enables the accurate dosing of Red Seas reef foundation a calcium strontium and coral colors supplements, ...(October 6th, 2018)
• 0730773215102 Red Sea Reef Foundation (30.8% similar) Sachem master combo multi test kits economy test. All of these elements need to be available in balanced proportions for sustainable successful coral health and growth. Red Seas reef foundation pro test kit enables accurate dosing of the supplements, which are part complete care program. Reef ...(March 29th, 2017)
• 0730773222315 Red Sea Treatment Kit (31.3% similar) Safely effectively and quickly controls optima in the reef aquarium optima-x is a unique, thick adhesive mixture that globules on contact with water. Optima-x globules will not affect the Seaside polyps of corals and allows for safe treatment optima that have grown inside coral colonies. Red Sea ...(May 17th, 2018)
• Pharm Sea Program Marine 100tests Red Care Kit Test Ammonia Fish (32.9% similar) Red Sea fish harm ltd. Marine care ammonia test kit. Aquarium water tests and reagents this advanced cliometric test has been Redeveloped to measure the total ammonia NH3 NH4 in marine aquariums of. Red Sea fish harm ltd...(June 30th, 2015)
• 11055 Red Sea Salt Mix For (28.3% similar) Red Sea salt mix for aquarium treatments thumbnails to contains biologically balanced, elevated levels of the foundation elements calcium, magnesium, carbonates necessary sustainable, accelerated coral growth. Natural Seawater includes over 70 chemical elements and although most of the influence ...(March 12th, 2017)
• 11065 Red Sea Salt Gallon Free Shipping (30.3% similar) No nitrates or phosphates algae nutrients toxic levels of heavy metals chemical binders low moisture content. All-natural Eco-friendly harvesting from the waters of exotic Red Sea biologically balanced levels foundation elements full complement trace guaranteed parameters for 10 liter salt is ideal ...(February 23rd, 2019)
• 11259062 Red Sea Turbo Skimmer Pump For Max And (34.6% similar) Red Sea turbo skimmer pump for max 130 and 130D replacement protein all aquariums...(January 1st, 2019)
• 15661 Red Sea Fish Pharm Replacement Pump Quiet For 730773156610 (50% similar) Item specifics condition: new: a brand-new, unused, unopened, undamaged item mpn: 15661WITH: impeller brand: Red Sea fish frameworks with: water filter systems model: 15661USED at: home type: pump skimmer type: hang-on protein skimmer used as: replacement submersible: no quantity: 1 pictures: quiet ...(March 28th, 2019)
• 16.9 Red Oz Energy Reef Vitamins Prices Amino Sea Acids Free (18.6% similar) Reef energy amino acids and vitamins B500 ml attention. The reef energy b enhances the absorption of the vitamins by corals. 9 oz bottle energy b is a high concentrated complex of amino acids and vitamins. Free shipping. The reef energy b will replenish vitamins produced by...(April 20th, 2015)
• 21455 Red Sea Ph-alkalinity Test 730773214556 (28.8% similar) Red Sea pH alkalinity test kit...(October 16th, 2017)