Aquarium.guideFind filters, heaters, lights and maintenance supplies for your freshwater tank. Compare sizes, controls and cleaning access before you choose.
Specifications checked with the manufacturer on 2026-09-07.
37 models
Filters · canister
Compact external filter with separate maker ratings for pump output and filter circulation.
Consider: Allow room to lift out and service the canister. Measure its 13.7-inch height plus the hose route before choosing it for a cabinet.
Filters · canister
Mid-size external filter with distinct pump-output and in-system circulation ratings.
Consider: A cabinet that fits the body can still leave too little hose or service room. Measure the full route and removal space before choosing this larger canister.
Filters · hob
Self-priming HOB filter with adjustable flow, surface skimmer, basket media, and maintenance indicator.
Consider: Rule it out if the trim is thicker than 13/16 inch or rear clearance is under 2.75 inches; measure both before ordering.
Filters · hob
HOB filter with adjustable intake and return flow, surface skimmer, heater holder, and basket media.
Consider: Needs 3 inches behind the tank and trim no thicker than 1 inch. Measure both; a wall position that fits the Tidal 35 may not fit this model.
Filters · hob
Self-priming five-stage HOB filter with a cartridge-clog indicator.
Consider: Uses Medium replacement cartridges. Include their cost in your supplies plan instead of comparing the filter purchase price alone.
Filters · hob
Self-priming five-stage HOB filter with a cartridge-clog indicator.
Consider: Uses Large replacement cartridges. Include their cost in your supplies plan instead of comparing the filter purchase price alone.
Filters · hob
Adjustable-flow HOB filter with a SoundShield motor barrier and Bio-Bag cartridge.
Consider: Uses Large Bio-Bag cartridges. Include replacements in the annual plan; its adjustable 10–130 GPH range alone does not establish tank-size fit.
Filters · hob
Adjustable-flow HOB filter with a motor sound barrier and Large Bio-Bag cartridge.
Consider: Its 20 GPH minimum is higher than the IQ 20’s 10 GPH minimum. If very gentle output is the priority, compare that lower-flow model before choosing.
Filters · sponge
Reusable air-driven fine sponge with an adjustable uplift tube and air collar.
Consider: Budget for an air pump, airline and check valve. Check the water depth against the uplift tube before choosing it for a shallow tank.
Filters · sponge
Reusable air-driven fine sponge with a weighted base, uplift tube, and air collar.
Consider: It has no built-in motor. Choose and budget an air pump and airline together with the filter; the pump and water depth affect delivered flow.
Heaters · electronic-adjustable
100 W submersible heater with digital temperature display, dual sensors, and fish guard.
Consider: The body is 11.75 inches tall. Check the available mounting space and water depth before choosing it for a shallow tank.
Heaters · electronic-adjustable
200 W submersible heater with digital temperature display, dual sensors, and fish guard.
Consider: The 14-inch body can exclude shallow tanks. Compare that height with the mounting position and water depth in the instructions before ordering.
Heaters · electronic-adjustable
50 W fully submersible adjustable heater in a thermal-plastic housing.
Consider: A cold room can demand more heat than the gallon rating suggests. Compare your coolest room temperature and target water temperature with the manufacturer’s sizing chart.
Heaters · electronic-adjustable
100 W fully submersible adjustable heater with an electronic thermostat.
Consider: The catalog and manual disagree above 30 gallons. Do not choose one solely from a 40-gallon claim; use the current exact-model sizing chart with your room-to-water temperature rise.
Heaters · preset
50 W preset submersible heater with heating and standby indicator lights.
Consider: Preset to 78°F with no user adjustment. Choose an adjustable heater if your established care plan needs a different target.
Heaters · preset
100 W preset submersible heater with heating and standby indicator lights.
Consider: Preset to 78°F with no user adjustment. Choose an adjustable heater if your established care plan needs a different target.
Heaters · electronic-adjustable
Flat 100 W fully submersible electronic heater with push-button temperature setting.
Consider: Its published rating stops at 29 gallons. For a larger tank, use the manufacturer’s sizing guidance instead of assuming this single 100W unit is enough.
Lights · planted-led
Programmable full-spectrum planted-tank LED with app and touch controls.
Consider: App control is part of the setup. Check that your phone supports the Fluval app, then measure the tank span against the 15–24 inch mounting range.
Lights · planted-led
Programmable full-spectrum planted-tank LED rated at 2,350 lm.
Consider: The 24–34 inch span establishes mounting fit, not plant-light coverage. Compare published PAR at your water depth before choosing it for demanding plants.
Lights · clip-on-planted-led
Compact clip-on planted LED with 60 LEDs and three touch-control states.
Consider: No built-in timer is listed. Plan how you will switch it on and off; use depth-specific light data before choosing it for demanding plants.
Lights · planted-led
24-in planted LED with daylight, 660 nm red, and RGB LED groups.
Consider: No depth-specific PAR table is published. For demanding plants or a deep tank, compare a fixture with published measurements at the relevant depth.
Lights · planted-led
36-in planted LED with daylight, 660 nm red, and RGB LED groups.
Consider: No depth-specific PAR table is published. For demanding plants or a deep tank, compare a fixture with published measurements at the relevant depth.
Water testing · liquid-reagent-kit
Freshwater liquid kit for pH, high-range pH, ammonia, nitrite, and nitrate.
Consider: It does not include GH or KH tests. Add separate tests if your water-monitoring plan needs hardness or carbonate hardness.
Water conditioner · dechlorinator
Concentrated fresh- and saltwater conditioner for chlorine and chloramine treatment.
Consider: Small water changes need small measured amounts. Use a graduated measuring tool and the exact bottle instructions; do not estimate tiny doses by eye.
Thermometers · adhesive-digital-strip
Adhesive vertical thermometer with a 64–86°F display range.
Consider: The display covers 64–86°F. Choose another thermometer if your planned water temperature falls outside that range.
Water-change tools · gravity-siphon
Small gravity siphon with clear, pinchable tubing for nano-tank substrate cleaning.
Consider: It has no squeeze bulb or flow guard. Choose another design if you need those features, and keep the intake away from small animals while controlling the flow.
Air & backup · battery-backup-air-pump
USB-powered single-outlet air pump that switches to its internal battery when external power is lost.
Consider: Battery runtime varies with age, depth and airflow. Test it with your own tubing and diffuser before relying on the stated outage duration.
Air & backup · battery-backup-air-pump
USB-powered dual-outlet air pump with automatic battery switchover and five output levels.
Consider: The stated airflow is a total, not a promise for each outlet. Test both connected devices together and balance their air delivery before relying on the backup.
Water-change tools · intake-sponge
Coarse intake sponge sized around a 0.5-in intake hole with stretch.
Consider: Intake fit is model-specific. Use the published compatibility chart and measure the intake; inspect foam condition instead of treating it as a guaranteed barrier for tiny animals.
Lights · planted-led
Current-generation app-controlled full-spectrum planted LED rated at 1,600 lm.
Consider: Operation depends on the app. Check phone compatibility before purchase, then measure the tank span against its 15–24 inch mounting range.
Lights · planted-led
Current-generation app-controlled full-spectrum planted LED rated at 2,550 lm.
Consider: Operation depends on the app. Check phone compatibility before purchase, then measure the tank span against its 23–35 inch mounting range.
Filters · hob
Four-stage hang-on-back filter with adjustable flow, a reusable media basket, and maker-rated maximum flow.
Consider: The media basket lifts upward. Leave unobstructed space above the filter so routine cleaning does not require moving the tank.
Filters · hob
Four-stage hang-on-back filter with adjustable flow, a reusable media basket, and maker-rated maximum flow.
Consider: The media basket lifts upward. Leave unobstructed space above the filter so routine cleaning does not require moving the tank.
Filters · hob
Five-stage hang-on-back filter with published in-system circulation, wet/dry chamber, and quick-access media.
Consider: The mechanical frame and chemical basket lift out separately. Leave overhead access for both so cleaning does not require moving the filter.
Heaters · adjustable-submersible
Slim 50 W adjustable submersible heater with a 66–86°F maker-published control range.
Consider: A cold room or open tank changes the heating load. Use the exact-model sizing chart with your coolest room temperature before choosing from the gallon rating alone.
Heaters · adjustable-submersible
Slim 100 W adjustable submersible heater with a 66–86°F maker-published control range.
Consider: A cold room or open tank changes the heating load. Use the exact-model sizing chart with your coolest room temperature before choosing from the gallon rating alone.
Filters · hob
Current five-stage self-priming HOB filter with a NoDrip cartridge holder and one specialty-pad position.
Consider: The current product page does not establish capacity or electrical requirements. Choose a documented model for a tank-size or power-based purchase until this exact unit’s specifications are available.
Clear the brand search or choose another tank size. The size filter shows only filters and heaters with a current manufacturer rating.
The size filter uses published capacity ranges for filters and heaters. Other equipment needs different fit checks. How this catalog works.