Aquarium Care Guides
2820 articles- Bubble Wand: Bubble Walls and AerationHow a bubble wand creates a wall of bubbles for decoration and surface agitation, and how it relates to oxygen exchange in the tank.
- Air Stone: Fine-Bubble AerationHow an air stone breaks airflow into fine bubbles, why surface agitation drives oxygenation, and where air stones are most useful.
- Phosphate Remover (GFO): Controlling PhosphateHow granular ferric oxide binds phosphate in a media reactor to keep reef and freshwater phosphate low and starve nuisance algae.
- Ammonia Remover Resin: Emergency Ammonia ControlHow zeolite-based ion-exchange media adsorb ammonia from aquarium water as an emergency measure, and where it fits in quarantine tanks.
- Algae Control Treatments: How Liquid Algaecides WorkHow glutaraldehyde-based liquid algaecides are used to spot-treat nuisance algae, and why dosing discipline matters for plants and invertebr
- Root Tabs: Targeted Substrate FeedingHow slow-release root tabs deliver nutrients to heavy root-feeding plants in inert gravel and sand, and how to place and replace them.
- Liquid Plant Fertilizer: Feeding the Water ColumnHow liquid fertilizers supply macro and micronutrients to aquarium plants through the water column, and how dosing and testing are balanced.
- Bacteria Starter: Seeding the Nitrogen CycleHow a bottled culture of nitrifying bacteria helps establish the nitrogen cycle in a new aquarium and why an ammonia source is needed.
- Dechlorinator: How It Neutralises Tap WaterWhy chlorine and chloramine in tap water harm fish and biofilters, and how a dechlorinating agent such as sodium thiosulfate neutralises the
- Pumice as Aquarium Substrate: A GuideHow porous volcanic pumice is used as a lightweight base layer beneath nutrient soils in planted aquariums, and what its structure offers ba
- Lava Rock GuideWhy porous lava rock works as both hardscape and biological filter media, how its surface area hosts bacteria, and how to use it.
- Crushed Coral Substrate GuideHow crushed coral raises pH and KH to buffer hard-water tanks, which fish benefit, and how to use and replenish it.
- Aquarium Sand Substrate GuideWhy fine sand suits burrowing and bottom-feeding fish, how aragonite sand differs for marine tanks, and how to keep a sand bed.
- Inert Aquarium Gravel GuideWhy inert gravel does not change water chemistry, how it supports beneficial bacteria, and where it fits in community and planted tanks.
- GH/KH Hardness Test Kit GuideWhat general hardness (GH) and carbonate hardness (KH) mean, how KH buffers pH, and how a drop-count titration kit measures both.
- Phosphate Test Kit GuideWhy phosphate fuels nuisance algae and inhibits corals, why reef keepers need low-range checkers, and how to test PO4 accurately.
- Nitrate Test Kit GuideHow a nitrate test kit tracks the end product of the nitrogen cycle, why nitrate accumulates between water changes, and what readings guide
- Nitrite Test Kit GuideWhy nitrite is the second toxic stage of the nitrogen cycle, how a test kit confirms cycling progress, and why any reading above zero is a w
- Ammonia Test Kit GuideWhy ammonia is the most toxic nitrogen compound in an aquarium, how reagent test kits detect it, and why the target reading is always zero.
- Salinity Refractometer GuideHow an optical refractometer measures the salinity and specific gravity of saltwater by light refraction, why temperature matters, and how t
- TDS Meter: A Guide for AquaristsA TDS meter measures total dissolved solids in ppm by reading electrical conductivity, used to monitor RO/DI purity and remineralisation.
- Digital pH Meter: A Guide for AquaristsA digital pH meter uses a glass electrode to measure water pH precisely, giving instant numeric readings for CO2-injected and reef tanks.
- Internal Protein Skimmer: A Guide for AIO and Small ReefsAn internal protein skimmer sits inside the tank or an AIO chamber and exports dissolved organics directly from the water column.
- Hang-on-Back Protein Skimmer: A Guide for Sump-Free TanksA hang-on-back protein skimmer mounts on the rim of a marine tank and exports organic waste through foam fractionation without requiring a s
- Nano Protein Skimmer: A Guide for Small Marine TanksA nano protein skimmer is a miniaturised foam-fractionation device that exports dissolved organic waste from small marine aquariums before i
- Circulation Pump: A Guide for AquariumsA circulation pump provides gentle directional flow inside an aquarium, breaking up dead spots without the strong wave action of a wavemaker
- Sump Return Pump: A Guide for Aquarium SystemsA sump return pump lifts water from the sump back to the display tank and sets the overall flow rate of a plumbed aquarium system, working a
- Inline CO2 Reactor: A Guide for Large Planted TanksAn inline CO2 reactor is a chamber plumbed into a canister filter line that dissolves injected carbon dioxide almost completely before water
- Disposable CO2 Cartridge: A Guide for Nano Planted TanksA disposable CO2 cartridge is a small single-use gas canister that supplies carbon dioxide to nano planted tanks without any refilling stati
- Refillable CO2 Cylinder: A Guide for Planted AquariumsA refillable CO2 cylinder is the pressurised gas reservoir that feeds a regulator and supplies carbon dioxide to planted aquariums for years
- Inline CO2 Atomizer GuideHow an inline CO2 atomizer plumbed into a canister filter return infuses fine mist into the outflow, keeping mid-to-large planted tanks free
- CO2 Ceramic Diffuser GuideHow an in-tank ceramic CO2 diffuser breaks gas into a fine mist for fast dissolution in small to mid planted tanks, and how to set its press
- CO2 Solenoid Valve GuideHow a CO2 solenoid valve automates day/night injection on a timer, why nighttime CO2 is risky, and how it saves gas in planted aquariums.
- CO2 Pressure Regulator GuideHow a CO2 pressure regulator steps cylinder pressure down to a stable working pressure for planted-tank injection, and what two-stage units
- RGB Controllable LED Light GuideHow RGB controllable LEDs mix red, green, blue, and white channels to tune color temperature and simulate sunrise and sunset cycles.
- Metal Halide Light GuideHow metal halide HID lamps deliver intense, penetrating light with a shimmer effect for deep reef tanks, their high power and heat, and why
- T5 HO Fluorescent Light GuideHow T5 high-output fluorescent fixtures produce broad-spectrum, even coverage for planted and reef tanks, and how they compare to LED and me
- Nano LED Light GuideHow compact nano LED fixtures light small and pico tanks, why their low heat suits tiny volumes, and how to set photoperiod and intensity.
- Marine / Reef LED Light GuideHow reef-grade LED fixtures deliver the blue/actinic spectrum and PAR that corals need, with guidance on intensity, spectrum, and acclimatio
- Under-Tank Pad Heater GuideHow under-tank heating mats warm small aquariums from below, where they fit, their limitations through glass, and how to size and use them s
- Titanium Heater: A GuideA titanium heater uses an unbreakable, corrosion-resistant tube suited to saltwater and aggressive tanks, usually needing an external contro
- Heater with External Controller: A GuideAn external controller monitors temperature with a separate probe and cuts power if the heater fails, adding a fail-safe layer.
- Mini Nano Heater: A GuideA mini nano heater is a low-wattage unit for small tanks; for 6 gallons or less a 25 W or smaller heater is recommended.
- Nano Internal Filter: A GuideA nano internal filter is a small submersible unit for tiny tanks, giving gentle flow and basic filtration for shrimp and bettas.
- Biopellet Reactor: A GuideA biopellet reactor tumbles biodegradable pellets to fuel bacteria that consume nitrate and phosphate, exported via a protein skimmer.
- Prefilter Sponge: A GuideA prefilter sponge slips over a filter intake to catch debris and protect fry and shrimp while adding bacterial surface area.
- Algae Turf Scrubber: A GuideAn algae scrubber grows algae on a lit screen to absorb nitrate and phosphate, exporting nutrients when the algae is harvested.
- Fluidized Bed Filter: A GuideA fluidized bed filter suspends fine sand or media in moving water, exposing every grain to oxygen for high-density biological filtration.
- Wet/Dry Trickle Filter: A GuideA wet/dry filter trickles water over air-exposed media so aerobic bacteria get maximum oxygen, giving strong biological filtration.
- Sump Filter: A GuideA sump is a secondary tank below the display aquarium that hides equipment, adds water volume, and improves system stability.