Vertex RX4 Calcium Reactor
Vertex RX Series Calcium Reactors
Stable parameters are the key to a successful Reefscape. Calcium, being utilized by a myriad variety of oceanic life forms, including corals and crustaceans, is amongst the most important of these parameters. As the fifth most abundant ion found in natural saltwater, it is absolutely critical that Calcium is kept as a constant. One of the greatest apparatuses we have at our disposal to maintain this parameter is the Calcium Reactor. By dissolving Aragonite-based mediums down to their basic elements, Calcium Reactors allow for a continuous influx of calcium into the system. Vertex™ RX-Series Calcium Reactors now bring this potent tool home to you with all the features and qualities you need at values you can easily afford.
Efficient and Easy to Use
Designed for maximum capability, Vertex™ RX-Series Calcium Reactors feature an advanced recirculating chamber design, allowing for extremely proficient use of media and CO2.
A large bubble counter makes for easy visibility and effortless adjustments. Fine tuning of flow/effluent is also straightforward with the high quality Vertex™ Needle Valve included with each reactor.
Vertex™ RX-Series Calcium Reactors utilize the exclusive Gas Stable Use (GSU) concept to aggressively dissolve CO2, recycle unused CO2, and extract only reduced CO2 effluent. As a result, Vertex™ RX-Series Calcium Reactors are more efficient than other available designs.
Vertex™ RX-Series Calcium Reactors are made to last; being assembled only with high-grade cast acrylic and heavy-duty PVC parts. All Vertex™ products are rigorously tested for safety, efficiency and reliability.
- Advanced reverse-flow design
- All John Guest fittings
- Precision Vertex™ Needle Valve
- Large bubble counter
- Onboard pH probe port
- Quick-Lock lids
- CO2 dissolution chamber prior to main reaction chamber
- Excess CO2 recycling system
- Output CO2 reduction module
- Phosphate reduction chamber
- Easily disassembled for maintenance
- Footprint 11" x 9½"
- Height 22"
- Pump 21W
- Primary Media Chamber 14” x 4” Diameter
- Phosphate Media Chamber 7” x 3” Diameter
- Rated up to 180 gal
Product Manuals & Documentation
Most orders under $20 ship for only $1.99 using a mix of economy shipping methods including UPS Ground, USPS First Class, and/or SurePost. Your order will be delivered in 1-7 business days after it ships out.
We ship 99% of the products we carry for free within the contiguous United States using a mix of economy methods including USPS First Class Mail, SurePost and UPS Ground. Your order will arrive in 1-7 business days. Just spend $20 or more!
Over 90% of shoppers receive their orders within 2 business using UPS Ground. Upgrade from free economy shipping to UPS Ground for only $1.99—or spend $250 and we’ll upgrade you automatically!
Expedited shipping services are available for most products if you are in a hurry. Get guaranteed delivery in 2 business days, 1 business day, or next day by 10:30 am. Costs vary by location.
Same-day shipping is available Monday-Friday for most products—place your order by 10:30 am PST. Pre-ordered and back-ordered items do not qualify, nor do drop-shipped, live, or frozen shipments.
We ship live plants, live foods, and frozen foods within the contiguous United States. Each of these categories is subject to its own $19.99 flat-rate shipping fee to cover the special packaging and/or expedited shipping costs required to ensure safe delivery. Orders with 12+ live plants ship free!
Learn More About Shipping
Return any new and unused item within 60 days for a full refund. Having difficulty with a product? Contact us to speak with an aquarium expert. If you need a replacement, fill out this form.
A small segment of the 180+ brands we carry require that customers contact them directly if/when problems arise. You can view the full list of those brands and get their contact info here.
Marine Depot is an authorized reseller for every product we carry. That means when you buy aquarium supplies from us, your products are not only backed by our own 60-day return policy, they also carry full factory warranties, where applicable. Some items have a 1-year warranty, others have limited lifetime warranties. Warranty coverage varies from manufacturer to manufacturer, so please read the product description of the item(s) you are considering thoroughly for details or contact us if you have warranty questions.
Learn More About Returns
Rack up reward points to earn discounts on future purchases! You can earn reward points by creating an account, writing reviews, referring friends, subscribing to our newsletter, buying products, and more!
- Earn 5 reward points for every $1 you spend to get 5% cash back
- Earn 1 reward point for every $1 you spend to get 1% cash back
AquaIllumination, CoralVue, Digital Aquatics, EcoTech Marine, IceCap, Innovative Marine, Kessil, Korallen-Zucht, Maxspect, Nano Box, Neptune Systems, NYOS, Oceanbox Designs, Pax Bellum, Red Sea, Reef Glass, Reef Octopus, Somatic, and Vertex Aquaristik
You can also get bonus reward points by purchasing select items during special sales and promotions.
Learn More About Rewards