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Plant fertilizers, liquid CO₂, reef dosing pumps, calcium & alkalinity
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In community tanks
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5,380 matching items · Most used first
FilterBulk Reef Supply
BRS color-changing mixed-bed DI resin is the final stage of an RO/DI unit, reducing total dissolved solids (TDS) to zero; the beads shift from blue to brown as they exhaust so you can tell when to change the cartridge. Sold in a 1.25 lb single-cartridge refill or a 1.5-gallon (7.5 lb) bulk bag that fills six standard 10-inch refillable cartridges, packed in foil-lined Mylar bags with a 2-year unopened shelf life.
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SupplementationBulk Reef Supply
Bulk Pharma Calcium Chloride 35 Pounds is an ultra-pure pharma-grade calcium additive for reef aquariums, used in 2-part dosing to replenish the calcium corals consume as they grow. It mixes fast and crystal clear with no residue and makes up to 32 gallons of BRS calcium liquid solution.
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SupplementationBulk Reef Supply
BRS Bulk Pharma Kalkwasser is a 38-pound bulk package of ultra-pure pharmaceutical-grade calcium hydroxide for reef aquarium calcium and alkalinity dosing via kalkwasser dripper, stirrer, or top-off. Made from an ultra-pure source with extremely low aluminum compared to typical calcium hydroxide, it replenishes the calcium and alkalinity corals consume while also helping raise pH.
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SupplementationBulk Reef Supply
Bulk Pharma Magnesium Chloride 35 Pounds is an ultra-pure pharma-grade magnesium additive for reef aquariums. Maintaining proper magnesium levels helps balance calcium and alkalinity by preventing excess calcium carbonate precipitation; it is used together with BRS Pharma Magnesium Sulfate and mixes crystal clear with no residue.
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SupplementationBulk Reef Supply
BRS Pharma Magnesium Chloride is a 7-pound bag of ultra-pure pharmaceutical-grade magnesium additive for reef tanks, mixed with magnesium sulfate to maintain the balance of calcium and alkalinity.
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SupplementationBulk Reef Supply
BRS Bulk Pharma Magnesium Sulfate is an ultra-pure, pharmaceutical-grade magnesium additive for reef tanks in a 35-pound resealable package. The fine powder dissolves fast and crystal clear with no residue, and is used with magnesium chloride to maintain magnesium levels that keep calcium and alkalinity in balance.
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SupplementationBulk Reef Supply
BRS Bulk Pharma Magnesium Sulfate (7 lbs) is an ultra-pure, pharmaceutical-grade fine powder used alongside BRS Magnesium Chloride to make liquid magnesium solutions for reef aquariums. It dissolves fast and crystal clear with no residue, helping maintain the magnesium-calcium-alkalinity balance; mix with magnesium chloride in RO/DI water and dose up to 100 ppm per day.
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SupplementationBulk Reef Supply
Bulk Pharma Soda Ash 27 Pounds is an ultra-pure pharma-grade alkalinity additive for reef aquariums, used in 2-part dosing to replenish the alkalinity corals consume as they grow. It mixes fast and crystal clear with no residue and makes over 30 gallons of BRS soda ash liquid alkalinity solution.
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SupplementationBulk Reef Supply
BRS Pharma Sodium Bicarbonate is a 35-pound bag of ultra-pure pharmaceutical-grade alkalinity additive for reef tanks, mixing crystal clear to make over 71 gallons of bicarbonate dosing solution.
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SupplementationBulk Reef Supply
BRS Bulk Pharma Sodium Bicarbonate (7 lbs) is a pharmaceutical-grade alkalinity additive for reef aquariums, part of the BRS 2-part dosing system that replenishes the alkalinity corals consume as they grow. It mixes crystal clear with no residue (1 cup plus 2 tbsp per gallon of RO/DI water yields over 12 gallons of liquid alkalinity solution) and is preferred for large alkalinity corrections or for tanks with pH over 8.4.
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FilterBulk Reef Supply
The Fiji Cube Refugium Baffle Kit is a DIY sump conversion kit that turns a standard glass aquarium tank into a fully functional sump; it includes cast acrylic, silicone-ready baffle slots for a protein skimmer, media reactor, and refugium sections, an adjustable water level to match skimmer height requirements, media trays with bio-foams, and filter sock holders (tank not included).
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OtherBulk Reef Supply
Bulkhead ABS Slip x Slip is a low-profile black ABS bulkhead fitting that creates a watertight penetration through an aquarium or sump wall for plumbing water in or out. Both ends accept glued PVC pipe, and it includes a gasket and nut, with sizes fitting holes from about 1-1/8 in. to 3-1/4 in.
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OtherBulk Reef Supply
An ABS bulkhead fitting with a slip socket on the flange and head side and threads on the other end for connecting aquarium plumbing through a drilled tank or sump wall. Bulkheads create watertight pass-throughs for drains and returns.
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OtherBulk Reef Supply
This low-profile ABS bulkhead from Bulk Reef Supply creates a secure, watertight pass-through for plumbing through an aquarium or sump wall. It has a threaded connection on the flange (in-tank) side for screw-in fittings and a slip socket on the nut side for glued PVC connections, is made from durable black reef-safe ABS with slightly thicker construction than standard bulkheads, and is available in 1/2", 3/4", 1", and 1 1/2" sizes.
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OtherBulk Reef Supply
Low-profile reef-safe bulkhead fittings from Bulk Reef Supply made of durable black ABS plastic, creating a secure watertight connection through drilled aquarium or sump walls for plumbing. The thread-by-thread version has female threads on both sides for screwing plumbing fittings directly in, making future plumbing changes easier. Available in 1/2, 3/4, 1, 1-1/4, and 1-1/2 inch pipe sizes.
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OtherBulk Reef Supply
The Oase PondoVac Classic is a wet and dry pond vacuum for small to medium ponds, pools, and spas, powered by a 1400-watt motor with up to 800 GPH (3000 L/h) suction; its single-chamber design automatically stops and drains when the 7-gallon tank is full so vacuuming continues hands-free, and it includes multiple nozzles, suction tubes, and a debris collection bag.
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FilterAquaReady
The AquaReady Bullet-1 Hang-On-Back Protein Skimmer uses a Sicce SHARK Nano needlewheel pump in a compact 4.9 x 3.1 inch cell-cast acrylic body, rated for aquariums up to 30 gallons with light bioload or 20 gallons with heavy bioload.
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FilterAquaReady
The AquaReady Bullet-2 is a hang-on-back protein skimmer rated for 30 to 50 gallons. Its compact bullet-shaped acrylic body houses a Sicce SHARK needle wheel pump that generates fine bubbles for efficient protein extraction, plus an air silencer for quiet operation.
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FilterAquaReady
The AquaReady Bullet-3 is a hang-on-back protein skimmer designed for aquariums between 40 and 80 gallons. It features a high-performance Sicce SHARK 1.0 needlewheel pump, durable cell-cast acrylic construction, an air silencer and silicone noise dampeners for ultra-quiet operation, and a compact 7.7 x 7.5-inch footprint.
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Substrates & AquascapingLifegard Aquatics
Lifegard Aquatics Burma Petrified Stone 25 lb aquascaping rock kit with a mix of small, medium and large natural stones (approximately 3.5 to 20 inches). The petrified wood-textured stone forms miniature rock-like formations with ridges and crevices, and is suitable for both freshwater and saltwater aquariums.
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Substrates & AquascapingUltum Nature Systems
The Burmese Petrified Wood is a natural aquarium hardscape stone formed from the fossilized remains of ancient trees; rich, mineralized grain patterns provide a prehistoric accent to live plants. Incredibly durable and holds its detail indefinitely; perfect where an ancient sunken-timber aesthetic is desired. 10LB to 30LB packs.
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SupplementationNyos
NYOS BYOTIC is a super-concentrated probiotic bacteria additive (75 g) that restores the natural biological bacterial balance in reef aquariums, targeting the bacterial imbalances and pathogenic germs (e.g., vibrios) behind unexplained coral loss. The highly pure formula supports better polyp expansion and coral vitality without adding phosphate; dissolve in tank water before dosing, using 1 g/25 gal daily for 3-5 days for problems then 0.5 g/25 gal until resolved, or 0.5 g/25 gal weekly as a preventative.
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Water PurificationNyos
Nyos BYOTIC (75 g) is a probiotic bacteria formula that restores the natural biological bacterial balance in the aquarium by out-competing pathogenic germs such as vibrios; for better polyp expansion and coral vitality. Highly pure product without phosphate increase; dosage for problems: 1 g/100 L daily for 3-5 days then 0.5 g/100 L until symptoms disappear; preventative: 0.5 g/100 L once weekly; turn off UV clarifier during treatment.
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OtherAquaforest
The Bypass Valve for AF OceanGuard 275 & 435 is a replacement plumbing component for the Aquaforest OceanGuard 275 and 435 aquarium systems. It fits into the system sump plumbing to divert or bypass water flow when servicing or redirecting filtration.
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OtherAquaforest
The Aquaforest Bypass Valve for the AF OceanGuard 605, 790, and 980 aquariums adds a threaded-and-barb bypass to the system so an additional fluidization filter can be installed. It is a schedule 40 hard-PVC elbow valve in silver/gray, compatible with Aquaforest OceanGuard 605, 790, and 980 tanks.
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FilterReef Octopus
The Reef Octopus C2T-90 Universal CO2 Scrubber is a universal reactor that helps control pH levels in a reef tank by connecting to the air intake of a protein skimmer; ideal pH around 8.3 for optimal coral growth. Supports stable pH water levels; dual valve control outlets; durable acrylic construction; sealed airtight environment preserves solution potency; compact profile fits under the tank; barbed intake for optional recirculation setup; 3.5 in diameter, 6.7x5.2 in footprint, 17 in height, 0.26 US gal capacity.
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FilterMaxspect
Maxspect Nano-Tech Ca/Mg Bio-Spheres are 1 kg of inert ceramic bio-media infused with calcium, magnesium, potassium, iron, boron, and zinc, fired above 2300°F for a strong, long-lasting structure. They stimulate nitrifying bacteria colonies, improve water clarity, and replenish essential minerals for freshwater fish such as discus; recommended for freshwater aquariums only.
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FilterMaxspect
Maxspect Nano-Tech Ca/Mg Bio-Spheres are a 2kg inert ceramic biological filter media fire-cured above 2300°F for strength and long life, infused with calcium, magnesium, potassium, iron, boron, and zinc. The minerals replenish water essential for many freshwater fish such as discus, while the porous structure hosts nitrifying bacteria and improves water clarity; recommended for freshwater aquariums only.
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OtherBulk Reef Supply
BRS Calanus - Freeze Dried is an all-natural, high-protein food for fish, coral, and filter feeders. These arctic copepods are rich in carotenoids, astaxanthin, and antioxidants, helping fish resist disease and promoting increased coloration.
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OtherNyos
The Nyos Calcium Reefer Test Kit is a titration-based test for measuring calcium in reef aquariums with high accuracy. Precise calcium readings support proper dosing for stony coral growth.
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