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Plant fertilizers, liquid CO₂, reef dosing pumps, calcium & alkalinity
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5,380 matching items · Most used first
OtherAquaZen
The AquaZen Pest Snail Catcher and Remover is a hand tool for catching pest snails in freshwater aquariums. Its telescoping handle reaches hard-to-access areas and captures bladder, ramshorn, and trumpet snails without chemicals or disturbing the aquascape.
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Substrates & AquascapingUltum Nature Systems
Petrified Wood is a remarkable natural stone formed from the fossilized remains of ancient trees, where organic materials have been replaced by minerals over millions of years. This results in a dense rock retaining the intricate grain patterns and textures of the original terrestrial vegetation. Its earthy tones and vertical wood-like structures make it a good pick for forest or sunken timber-inspired hardscape layouts. Also suitable for terrariums, paludariums, or similar planted enclosures for a prehistoric, woodland aesthetic. Available in 5LB ($23.99), 10LB ($44.99), 20LB ($74.99), and 30LB ($99.99) packages.
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Substrates & AquascapingAqua Natural
Pewter Black Gravel is a natural 6-8mm gravel substrate from Aqua Natural that appears nearly jet black when wet. It works as a cap layer over planted substrates or as a standalone substrate, offering ample surface area for beneficial bacteria with minimal effect on water chemistry.
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OtherSalifert
The Salifert pH Aquarium Test Kit is a colorimetric test for measuring pH in marine aquariums. The kit provides fast, easy-to-read results for routine pH monitoring.
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SupplementationSeachem
This glass pH drop checker monitors CO2 concentrations and pH levels in planted aquariums (especially those with CO2 injection), working with any aquarium size. Fill the bulb with 20 drops of the included pH-sensitive indicator solution and place it funnel-side down in the tank — the solution changes color from yellow (low pH / more CO2) to green to blue (high pH / less CO2). Includes the glass drop checker, suction cup mount, and indicator solution (refills available).
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SupplementationSeachem
The Seachem pH Checker Refill Solution is a CO2 indicator solution for use with the Seachem glass pH Checker in planted aquariums. The solution changes color from yellow to green to blue according to pH shifts caused by dissolved CO2, making CO2 concentration easy to monitor.
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OtherReef Factory
The Reef Factory pH meter monitors aquarium pH 24/7 with notifications when pH leaves a safe range and remote monitoring via app or browser; it has ±0.1 pH accuracy, tracks historical pH data, and includes the probe, power supply, and resetting magnet.
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OtherSalifert
The Salifert pH Test Kit is sufficiently accurate to monitor pH fluctuations of approx 0.2 pH units. Range pH 7.4-8.6; approx 50 tests per kit. pH should not fluctuate more than approx 0.3 units during 24 hours and should preferably be kept between 8.0 and 8.2 for coral and calcareous algae growth.
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OtherAPI
The API pH Test Kit is a liquid test kit for freshwater aquariums that reads pH from 6.0 to 7.6. It includes supplies for 250 tests along with a test tube, color chart, and instructions for weekly pH monitoring.
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SupplementationBrightwell Aquatics
A liquid pH increaser from Brightwell Aquatics made with high-purity materials; it rapidly raises pH and alkalinity in marine and reef aquaria, helping counter low pH from poor circulation or CO2 accumulation. Dose up to 5 ml per 20 gallons daily, keeping alkalinity within 7-12 dKH.
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OtherHM Digital
The HM Digital PH-200 is a waterproof (IP-67, submersible and floating) pen-style pH/temperature meter measuring 0-14 pH with 0.01 resolution, featuring simultaneous temperature display, automatic temperature compensation, digital push-button calibration, and a replaceable SP-P2 sensor, suitable for checking tap water, RO/DI product water, hydroponics, and lab applications.
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SupplementationBulk Reef Supply
BRS Pharma Calcium Chloride 1-Gallon Mix (10 pack) — Ultra-pure calcium chloride for 2-part dosing in your reef tank. Also available: 1 gallon mix (1 single-use container), 5 gallon mix (5 single-use containers).
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SupplementationBulk Reef Supply
BRS Pharma Calcium Chloride 1-Gallon Mix (5 pack) — Ultra-pure calcium chloride for 2-part dosing in your reef tank. Also available: 1 gallon mix (1 single-use container), 10 gallon mix (10 single-use containers).
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SupplementationBulk Reef Supply
BRS Pharma Calcium Chloride 1-Gallon Mix (Single Use). Also available: 5 gallon mix (5 single-use pouches), 10 gallon mix (10 single-use pouches).
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SupplementationBulk Reef Supply
Bulk Reef Supply Pharma Kalkwasser is ultra-pure calcium hydroxide for maintaining calcium and alkalinity in reef aquariums. It mixes faster with fewer impurities and helps elevate pH; available in 2 lb and 4 lb sizes.
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SupplementationBulk Reef Supply
The BRS Pharma Kalkwasser Bulk Package is a 4-pound kalkwasser starter kit with everything needed to maintain calcium and alkalinity in a reef aquarium. It includes 4 pounds of ultra-pure pharma-grade kalkwasser, 7 pounds of pharma sodium bicarbonate, pharma calcium chloride mixes, and a pharma magnesium mix for balancing the tank before kalkwasser dosing.
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SupplementationBulk Reef Supply
The BRS Pharma Kalkwasser Starter Package is a 2-pound bundle of ultra-pure calcium hydroxide for maintaining calcium and alkalinity in reef aquariums. It is made from a high-purity source with very low aluminum content and is designed to be dosed through top-off water or a kalkwasser reactor.
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SupplementationBulk Reef Supply
BRS Pharma Magnesium Mix for 2-Part Maintenance is a pharmaceutical-grade pre-mixed blend of magnesium chloride and magnesium sulfate (5.25 cups : 2 cups) that makes 1 gallon of liquid magnesium solution. Designed for weekly or monthly dosing and small adjustments, it maintains magnesium levels to balance calcium and alkalinity in reef tanks without residue, keeping adjustments under 100 ppm per day.
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SupplementationBulk Reef Supply
The BRS Pharma Magnesium Mix for General Adjustments is a pre-measured, pharmaceutical-grade powder blend of magnesium chloride and magnesium sulfate (7 1/4 cups to 1/2 cup) that makes 1 gallon of liquid magnesium solution for reef aquariums. It is formulated with a low sulfate ratio for large one-time magnesium corrections, helping maintain the magnesium-calcium-alkalinity balance; mix the pouch into RO/DI water and dose up to 100 ppm per day.
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SupplementationBulk Reef Supply
BRS Pharma Soda Ash 1 Gallon Mix (Single Use). Also available: 5 gallon mix (5 single-use pouches), 10 gallon mix (10 single-use pouches).
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SupplementationBulk Reef Supply
BRS Pharma Soda Ash 1-Gallon Mix (10 pack) — Ultra-pure grade soda ash for 2-part dosing in your reef tank. Also available: 1 gallon mix (1 single-use container), 5 gallon mix (5 single-use containers).
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SupplementationBulk Reef Supply
BRS Pharma Soda Ash 1-Gallon Mix (5 pack) — Ultra-pure grade soda ash for 2-part dosing in your reef tank. Also available: 1 gallon mix (1 single-use container), 10 gallon mix (10 single-use containers).
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SupplementationBulk Reef Supply
BRS Pharma Sodium Bicarbonate 1-Gallon Mix — Ideal for large changes in alkalinity levels or daily dosing in aquariums with high pH. Each container is professionally weighed to make 1 gallon of sodium bicarbonate alkalinity solution.
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OtherEHEIM
The Eheim pHcontrol+e is a WiFi-connected smart controller that monitors aquarium pH (sensor range 0-14) and regulates CO2 dosing through a magnetic valve to hold a target pH (control range 6-9), using carbonate hardness input in Smart mode. Offers day/night CO2 control, Eheim Digital linking (e.g. LEDcontrol+e), guided sensor calibration, calibration/water-test reminders, sensor replacement alerts and pH deviation warnings; 3-year warranty.
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FilterTwo Little Fishies
Two Little Fishies PhosBan is a synthetic ferric oxide hydroxide (GFO) phosphate adsorption media for saltwater and freshwater aquariums that also adsorbs silicate without releasing adsorbed substances. Recommended dosing is 50g per 50 gallons of saltwater (150g treats up to 158 gallons), and it works tumbled in a reactor or in a media bag in high flow, available in 1/3 lb (150g) and 1 lb (454g) sizes.
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FilterTwo Little Fishies
The Two Little Fishies PhosBan Reactor 150 is an upflow media reactor that pushes water from the bottom through media for even distribution, preventing channeling and gently fluidizing media like GFO. It has a 200-gram max media capacity, 1/2" barb inlet/outlet with an included 1/2" ball valve for flow control (max 250 GPH), a low-profile 14.25"H x 3"W x 4"D body with built-in hanging bracket for hang-on-back or under-tank mounting, and works with activated carbon, GFO, and biopellets; a 100-250 GPH feed pump is required.
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OtherTwo Little Fishies
Two Little Fishies PhosBan Reactor 150 Foam Disks are replacement sponge pads (2 per set) specifically designed for the PhosBan Reactor 150. The black reticulated foam disks distribute water flow evenly, prevent media from escaping the reactor chamber, and can separate different filtration media (GFO, carbon, resins); proper fluidization is critical for phosphate removal in reef aquariums.
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OtherTwo Little Fishies
Two Little Fishies replacement O-ring for the PhosBan Reactor 150.
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FilterTwo Little Fishies
Two Little Fishies PhosBan Reactor 550 is designed to push water upwards from the bottom through the media. Includes Phosban 550 body, lid, ratchet clip, 3 soft 90 elbows, 2 sponges, 2 dispersion plates, ball valve, short pipe adapter, and 9 in tube.
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FilterTwo Little Fishies
The PhosBan Reactor Extension Kit contains all the parts needed to hang a PhosBan Reactor on the back of an aquarium or on the side of a sump, providing a flexible, space-saving connection for reactor installation.
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