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Why purchase a separate and expensive auto top-off system when HYDROS can do the job for you? The HYDROS Auto Top-Off Kit comes with everything you need to use your HYDROS device (like the Control X2 or Control X4) as...

Requires a HYDROS System to operate The HYDROS Temperature Sensor is an easy and affordable way to prevent your aquarium water from becoming too cold or too hot. It monitors the water temperature in your aquarium so you can keep it within the safe...

Requires a HYDROS System to operate The HYDROS Leak Detection Sensor is a solid surface leak detector that can sense when freshwater or saltwater is underneath it and use that information to protect your aquarium, home, or office from total...

Requires a HYDROS System to operate Protect your aquarium, home, or office from total disaster The HYDROS Rope Leak Detection Sensor is a flexible line that detects the presence of moisture anywhere along the rope. Kit Includes: Leak...

Requires a HYDROS System to operate The HYDROS Skimmer Sensor serves a very specific and important role: it prevents your protein skimmer from overflowing onto the floor or back into your sump. The way it works is easy: just place the sensor inside...

Requires a HYDROS System to operate The HYDROS Water Level Sensor is an optical sensor you can use for a variety of aquarium applications, such as sensing when your tank needs to be topped off or to detect when a dosing container needs a refill. It...

Requires a HYDROS System to operate The HYDROS DC Solenoid Valve is a handy HYDROS Control 2 and Control 4 accessory that provides easy on/off RO or RO/DI water flow. You can connect the solenoid to your reverse osmosis filter...

Requires a HYDROS System to operate With a HYDROS DC Micro Pump and a HYDROS Optical Water Level Sensor (or Float Sensor), you can use the HYDROS Control 2 and Control 4 as an auto top-off (ATO) system. Just plug the pump into a...

HYDROS Control 4 is a powerful and robust aquarium controller capable of performing all essential functions needed to maintain a healthy aquarium without the need for extra expensive modules. Set up is quick and easy, making this ideal for...

HYDROS Control 2 is a small, general-purpose aquarium controller capable of managing and controlling all the main functions of an aquarium. Set up is quick and easy, making this ideal for both beginner and advanced hobbyists. Monitor...

Cool Red Sea sticker to show your love and support for this brand. Size: 3" by 1.2" Material: Durable BOPP (glossy, Permanent) On White Background where Applicable

Cool SICCE sticker to show your love and support for this brand. Size: 3" by 1.2" Material: Durable BOPP (glossy, Permanent) On White Background where Applicable

Aquarium Mechanical Filter Pad, bonded and keep original shape. Easy cut to fit any size filter Bonded, keeps original shape Superior filtration with uniform and consistent material Duplicates or surpasses original equipment specifications Long...

This High Capacity GFO is the Original GFO Bayoxide E33.  All of the fines and dust have be prefilltered out to give you a heaver more effective product. High phosphate levels are a recipe for disaster in saltwater aquariums. It is a nutrient for...

This GFO is the Original GFO Bayoxide E33. High phosphate levels are a recipe for disaster in saltwater aquariums. It is a nutrient for nuisance algae and also hampers the formation of calcium skeleton in corals. There are several different methods for...

We’ve partnered with Kolar Labs to bring the best available aquarium carbon directly to consumers. Calgon Carbon’s CRYSTAL CAL granular activated carbon is true liquid phase activated carbon made for aquariums. This laboratory grade granular...

Aquatop Breza AC/DC Plus Battery Powered Air Pump (AC/DC-PLUS) The Aquatop Breza AC/DC Plus is a premium, professional-grade emergency aeration system designed to protect your aquarium during power outages. Unlike standard backup pumps, the AC/DC Plus...

USB Type-C connector to USB Type-C connector - 10 FT.  Connects Kessil A360X lights to each other or to the Spectral Controller X The Kessil 90 Degree K-Link cable will work with the new X series Kessil LED lights. One of the ends of...

The Shark Sponge replacement kit provides 2x white sponge with 20ppi of cleaning power.

The Shark Sponge replacement kit provides 1x white sponge with 20ppi of cleaning power and 2x Blue 10ppi pads for crystal clear water.

Oceans Wonders new Coral FRAG HUBS are perfect for safely holding all of your frags in one convenient spot in your aquarium. Our frag hubs are available in a variety of sizes with 5, 10 or 20 holes. They are made from the same material as our popular...

Oceans Wonders new Coral FRAG HUBS are perfect for safely holding all of your frags in one convenient spot in your aquarium. Our frag hubs are available in a variety of sizes with 5, 10 or 20 holes. They are made from the same material as our popular...

Oceans Wonders new Coral FRAG HUBS are perfect for safely holding all of your frags in one convenient spot in your aquarium. Our frag hubs are available in a variety of sizes with 5, 10 or 20 holes. They are made from the same material as our popular...

ALL-FOR-REEF is an easy- to-use, highly concentrated solution for the supply of ALL essential minerals and trace elements in new or moderately stocked reef aquariums. Benefits: Complete mineral supply in only one solution The most...

The HI780-25 are high-quality reagents that are pre-measured, allowing for users to achieve fast and accurate measurements with their Marine pH Checker® HC. These reagents follow the Phenol Red method in which the reagents produce a range of...

FuzzOut helps combat stubborn hair algae in the aquarium. FuzzOut removes all toxins, metals and odors in the water column while simultaneously providing bacteria that oxygenates the water column. FuzzOut also aids in the removal of...

MaxOut PRO Freshwater’s unique blend combines high-grade rinsed carbon, proprietary phosphate resin and organic scavenger resins. MaxOut PRO Freshwater removes all toxins, metals and odors in the water column. High capacity carbon removes...

There are many benefits of using MAXOUT PRO.  MAXOUT PRO removes toxins, metals and odors in the water column.  High capacity carbon removes organics and polishes aquarium water.  Proprietary resins unique to the MAXOUT PRO blend...

MaxOut removes all toxins, metals and odors in the water column. High capacity carbon removes organics and polishes aquarium water. Proprietary resins unique to the MaxOut blend aid in the removal of phosphates and reduces the buildup of...

Make short work of your dirty sump or bare-bottom aquarium. Simply attach the MJV to a SICCE Syncra Nano with the included snap-in adapter or use it with a spare Cobalt Aquatics™, or Marineland® Maxi-Jet® Pump Protect Your Pump With the...

Make short work of your dirty sump or bare-bottom aquarium. Simply attach the MJV to a SICCE Syncra Nano with the included snap-in adapter or use it with a spare Cobalt Aquatics™, or Marineland® Maxi-Jet® Pump Reach Those Tight...

Make short work of your dirty sump or bare-bottom aquarium. Simply attach the MJV to a SICCE Syncra Nano with the included snap-in adapter or use it with a spare Cobalt Aquatics™, or Marineland® Maxi-Jet® Pump Protect Your Pump With the...

ReefLED hanging kit enable individual units to be suspended above an aquarium.

Universal mounting arm 160S/170 The mounting arms attach each ReefLED™ 160S/170 individually to the rear wall of a tank and can be rotated to the upright position during reefscaping or other tank maintenance.Set at the correct height above the...

ONE FREE ITEM PER ORDER.  THIS TANK STICKER IS FREE WITH ANY ORDER OVER $50.  JUST ADD $50 WORTH OF PRODUCTS TO YOUR CART AND THIS ITEM WILL BE FREE. Round VCA Sticker

Black 11oz Mug with a Glossy Orange, Emblazoned with Our Logo. Inside Perfect for Your Favorite Beverage.  Dishwasher and Microwave Safe

Specifications: Dimensions - 13" x 2.75" Plug Capacity - 24 Magnets - 2

Specifications: Dimensions - 6.25" x 2.75" Plug Capacity - 12 Magnets - 1 Glass Thickness - up to 1/2"

Specifications: Dimensions - 6.25" x 1.6" Plug Capacity - 6 Magnets - 1 Glass Thickness - up to 1/2"

Red Sea Salt contains biologically balanced, elevated levels of the foundation elements (Calcium, Magnesium, Carbonates) necessary for sustainable, accelerated coral growth. Red Sea Salt is ideal for reef aquariums, in particular for LPS...