Choose freshwater aquarium equipment.

Compare filters, heaters and lights that fit your tank, with room to clean and maintain them.

30¼ in long 12¾ in high 12½ in deep
30¼ inExternal length
12½ inExternal depth
12¾ inExternal height

Outside measurements for this Aqueon tank. Leave extra room behind and above it for hoses, a lid and maintenance.

Plan the essentials

1

Filter the water

Compare capacity, media and maintenance access.

2

Keep the water at the right temperature

Match the heater chart to the room and tank.

3

Choose the light

Check length, controls and plant requirements.

4

Test the water

Choose the tests you need and follow each instruction.

5

Make water changes easier

Plan water handling, replacement supplies and access.

Not sure of the volume? Calculate it →Replacing equipment? Compare models →

Look beyond the gallon rating.

The numbers that matter depend on the job. Start with these equipment examples.

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For a compact canister setup

Fluval 107

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.

For accessible filter media

Fluval AC20

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.

For a short planted tank

Fluval Plant 4.0 22W

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.

Plan your aquarium costs.

Use your tank measurements, equipment labels and electricity rate. See the assumptions alongside the result.

Choose and install your equipment.

Compare filter types, understand flow ratings, and make room for safe connections.