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In community tanks
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5,380 matching items · Most used first
FilterBulk Reef Supply
Bulk Reef Supply Kleanwater 4 Stage Basic RO Filter Kit; drop-in replacement filters for the Kleanwater Basic RO system. Includes 1x Purtrex 1-micron sediment filter and 2x BRS Universal 1-micron carbon block filters to protect the RO membrane.
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FilterBulk Reef Supply
Bulk Reef Supply Kleanwater 4 Stage Upgrade Filter Kit with refillable DI; drop-in replacement filters for Kleanwater 4-stage RO/DI systems and compatible standard 10-inch systems. Includes a 1-micron Purtrex sediment filter, a BRS Universal carbon block, and a refillable DI cartridge filled with color-changing resin.
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FilterBulk Reef Supply
Bulk Reef Supply Kleanwater 6 Stage Upgrade Filter Kit with refillable DI; drop-in replacement filters for Kleanwater 6-stage RO/DI systems and compatible standard 10-inch systems. Includes a 1-micron Purtrex sediment filter, two BRS Universal carbon blocks, and two refillable DI cartridges filled with color-changing resin.
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LightsKessil
Kessil K-Link Extension Cable (10 ft); extends the connection range between Kessil A360X, A360XE, A500X, and AP9X lights and controllers. USB Type-C male to female with a 90-degree removable adapter for minimal clearance.
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Korallen Zucht
Korallen Zucht Coral's Love (250 ml) acts quickly to provide direct nutrients needed for regenerating bleached or damaged corals - a perfect problem solver for immediate help. Deepens coloration, increases growth rates, and prevents nutritional deficiencies; suitable for all corals (SPS, LPS, softies, horn); shake well, dose 1 mL per 100L every other day for general support, daily when damage is present.
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Water PurificationKordon
Kordon Methylene Blue (4 oz) is effective against superficial fungal infections of fish, an alternative to malachite green for sensitive fish; safe for fish eggs and fry for fungal prevention; as a secondary use, effective against some external protozoans (Ich, Chilodonella, Costia). As an oxygen transporter it aids treatment of cyanide and nitrite poisoning; for fresh and saltwater; made in the USA.
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Water PurificationKordon
Kordon AmQuel Ammonia Remover Water Conditioner removes chlorine, chloramines, and ammonia safely and quickly, converting ammonia into a non-toxic compound that bacteria quickly consume. It does not interfere with the biological nitrogen cycle and is safe for freshwater and saltwater aquariums; each ounce treats 60 gallons.
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OtherSan Francisco Bay Brand
San Francisco Bay Brand Krill (3.5 oz, 30 cubes) is an all-natural frozen fish food of Antarctic krill rich in Omega-3s and astaxanthin, for large saltwater and freshwater carnivores.
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OtherSan Francisco Bay Brand
San Francisco Bay Brand Krill Flat Pack is a frozen fish food of whole Antarctic krill (Euphausia superba). Rich in Omega-3 fatty acids and astaxanthin, it supports coloration, growth, and vigor in large freshwater and marine carnivores such as triggers, groupers, and cichlids.
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OtherRod's Food
Rod's Food Krill + Frozen Food is a 6 oz frozen flat pack of whole krill enriched with astaxanthin, beta-carotene, and omega-3 fatty acids. It provides a nutrient-dense diet for large marine fish and predatory invertebrates, supporting coloration and health.
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Other3F
Krill Pacifica frozen fish food (100 g) is a popular high-protein food for freshwater and marine fish, ideal for larger fish. Krill pacifica is a small shrimp (approx 1 cm) that feeds on other small crustaceans; its natural habitat is the Atlantic and Pacific Ocean.
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Other3F
Krill Pacifica frozen fish food (500 g) is a popular high-protein food for freshwater and marine fish, ideal for larger fish. Krill pacifica is a small shrimp (approx 1 cm) that feeds on other small crustaceans; its natural habitat is the Atlantic and Pacific Ocean.
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OtherBulk Reef Supply
BRS Freeze Dried Krill Superba (Euphausia superba) are whole 1–1.5" krill — two to three times the size of traditional krill — rich in astaxanthin (150–200 ppm), protein (60%), and lipids for color enhancement and growth. Ideal for large-mouthed fish like groupers and snappers as well as smaller fish that shred their food, and helpful for developing feeding responses in new fish; 56 g container.
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Other3F
Krill Superba frozen fish food (100 g) is a large shrimp, up to 6 cm, high in protein and well suited for larger freshwater and marine fish. In nature this shrimp feeds directly on phytoplankton.
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OtherNeptune Systems
A lab-grade conductivity probe from Neptune Systems that measures salinity in a reef aquarium through the Apex controller, enabling real-time monitoring and alerts for salinity shifts. It connects via a standard BNC connector with a 10-foot cable and is also available as a replacement for probes that typically need periodic cleaning, calibration, and replacement every 1 to 2 years.
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OtherNeptune Systems
A Neptune Systems lab-grade dissolved oxygen probe that connects to the Apex PM3 module for continuous dissolved oxygen monitoring. Its sensing membrane is user-replaceable, so the probe lasts long term with routine membrane changes.
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OtherNeptune Systems
Neptune Systems lab-grade double junction ORP probe with a BNC connector, compatible with Apex and other monitors/controllers using a BNC connection. The dual-chamber design isolates the reference gel from proteins and organics that can clog and degrade readings, so it holds calibration longer and lasts longer than traditional single-junction probes.
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OtherNeptune Systems
Neptune Double Junction lab grade pH probes outlast most other traditional lab grade probes, letting you go longer between calibrations and replace probes less frequently. The double junction isolates the reference gel and probe from proteins and other organics that may otherwise precipitate and clog, shortening the probe's lifespan. Compatible with any monitor or controller with a BNC style connection. Includes 1x probe with 10 foot cord; calibration fluid sold separately.
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Substrates & AquascapingUltum Nature Systems
Lagoon Stone is a unique natural rock that offers incredible character for high-impact aquascaping. Dark grey in color, this stone features a rugged surface texture very similar to Lava Rock, characterized by numerous jagged edges, deep depressions, and a highly porous feel. These natural craters make Lagoon Stone the perfect choice for creating intricate cave-like structures and mountain-style hardscapes. Because of its rough, abrasive edges, it is not recommended for fragile-finned fish such as Bettas or animals with sensitive skin. Also suitable for terrariums, paludariums, or similar bioactive enclosures. Sold in 5LB, 10LB, and 20LB options.
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OtherOceans Wonders
A 15-pack of large flat coral frag disks from Oceans Wonders, made from 100% pure Caribsea reef sand. Measuring 1.5 inches wide and 3/8 inch thick, the weighted disks keep frags of hard and soft corals such as Acropora, Montipora, and Xenia secure against currents, and their calcium-carbonate sand composition encourages coralline algae growth and helps coral tissue spread.
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OtherReef Rax
The Reef Rax Large Corner Frag Rack is a large coral frag rack designed to fit into the corner of an aquarium, making efficient use of tank space for coral propagation and display. It comes in multiple color and configuration options to suit different aquascaping needs.
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Substrates & AquascapingMarcoRocks
MarcoRocks Large Foundation Reef Saver Dry Live Rock is a pest-free dry foundation rock (9+ inches, 6-13 lbs) cut flat on one side for stable aquascape bases in tanks 90 gallons and larger, sold by the piece.
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Substrates & AquascapingMarcoRocks
MarcoRocks Large MR Coralline Foundation Rock is a flat-cut base rock (9-13 in, 6-13 lbs, sold by the piece) with a coralline appearance for stable aquascapes in tanks 90 gallons or larger, free of nuisance algae and pests.
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OtherVossen
The Vossen Larval Trap is a suction-cup-mounted acrylic trap with a battery-powered LED light that lures fish fry into the trap, using gentle airlift flow to safely collect larvae for breeding.
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FilterEHEIM
EHEIM LAV (1 litre) is a natural volcanic rock bio-filter medium for biological filtration. Its rough, highly porous surface structure provides very good colonization conditions for purification bacteria; it can be washed and reused, and is suitable for fresh and marine water.
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OtherHM Digital
The HM Digital LBS-10 Leak Block combines an electronic moisture sensing pad with a latching solenoid valve that automatically shuts off water flow (up to 5 GPM) and sounds a high-frequency alarm when water is detected — ideal for RO/DI systems and household appliances. It connects via 3/8" FNPT or 1/2" MBSP fittings, runs on a 9V battery (included), and fail-safes shut with a low-battery alert.
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OtherNeptune Systems
Neptune Systems LD-1 low-profile leak detection probe that connects to the Neptune FMM module and alerts your Apex controller when water touches the sensor. Its thin design slips under carpet or into tight, low-clearance spaces; compatible with the FMM only (not the ALD module), and suited for water-on-floor warnings or skimmer cup overflow detection.
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OtherNeptune Systems
A full-size solid surface leak detection probe from Neptune Systems that works with the FMM module of an Apex aquarium controller. Its weighted design sits flat on hard floors, inside stands, or on top of skimmer cups, and the Apex can notify the owner or shut down equipment when water touches the sensor.
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OtherNeptune Systems
The Neptune Systems LD-3 Optical Multi-Surface Leak Sensor uses optical sensor technology to detect water spills and alert Neptune Apex controllers via an FMM port connection. It is epoxy-coated and corrosion-resistant, reusable after contact with water, and works on hard surfaces including metal without false alarms.
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OtherNeptune Systems
A leak detection kit from Neptune Systems that adds moisture sensing to any Apex aquarium controller. It includes an FMM module, two LD-2 solid surface leak detection probes, and a 3-foot Aquabus cable, with support for up to four probes total; when moisture is detected, the Apex can send alarms through Fusion and shut down equipment on an EnergyBar.
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