This tank, its lid and its stand
- Tank format
- Aqueon Standard 55 gallon; 48¼ × 12¾ × 21 in outside
- Empty tank weight
- 78 lb
- Matching lid or top
- 100129024
- Lid fit
- 24 × 12 in; Aqueon’s catalog says the 55 takes two
- Matching stand
- Aqueon Classic Pine Black, item 100151048
These sizes are for the Aqueon Standard 55 gallon; another brand’s 55 gallon can differ. Lids fit a tank model, not a gallon number.
Box sizes won’t tell you if a lid fits: measure the ledges the lid rests on, the openings either side of the center brace and the space for the strip at the back. Aqueon’s catalog lists two of its 24 × 12 in tops for this 55; check both brace openings before ordering.
Aqueon’s 2025 catalog lists this stand for this tank, which tells you they fit, not that it is in stock. Follow the stand’s assembly instructions. Aqueon doesn’t publish the stand’s weight, so the filled weight calculator leaves it blank.
Work out the filled weight → Add your substrate, rock, equipment and stand to see the total on the floor.
Sold as a kit
Aqueon sells this size as a starter kit. Here is what is in each box, in Aqueon’s own list, and what you still need before fish go in.
Aqueon Rectangle LED Kit, 55 gallon
Item 100117870.
In the box: glass aquarium, low profile LED hood, QuietFlow power filter, filter cartridge, submersible preset heater, premium fish food sample, water conditioner sample, fish net, thermometer, setup guide.
The heater is preset to 78 °F with no dial: right for most tropical fish, too warm for goldfish and other cool-water fish. Aqueon doesn’t give its watts; for 55 gallons in a 70 °F room its chart gives 150 W, so check the heater’s label against that.
Its filter takes the Large Aqueon replacement cartridge, so budget for replacements.
Aqueon’s page for this kit, read .
Still to buy with this kit: a water test kit, a full bottle of water conditioner (the kit’s is a sample), gravel or sand, and plants and decor.
What to buy, in order
Buy the lid made for this tank (see below) and a stand built to carry it full, with room to open the cabinet and reach your equipment.
Check stand and lid fit →Choose gravel or soil and how deep you want it, then work out how much to buy from the inside size of the tank. Bags of different substrates weigh differently, so a pounds-per-gallon rule is only a rough guide.
Work out how much substrate →A filter rated for 55 gallons still needs its intake and outflow placed to move water along four feet. Follow its manual rather than a one-size turnover rule.
Compare filters →A sponge filter needs an air pump, airline and a check valve; choose a pump strong enough for your water depth. A hang-on-back or canister filter doesn’t need one, though a battery air pump makes a good backup in a power cut.
Set up an air pump →Decide the water temperature your fish need and how cold the room gets. Size the heater from the maker’s chart and your actual water volume, and check it with a separate thermometer.
Size a heater →Check the light spans your tank and how it mounts. For plants, compare PAR at your water depth where the maker publishes it; watts alone don’t tell you how much light reaches the bottom.
Check light fit →Get a kit that tests ammonia, nitrite, nitrate and pH; most master kits leave out GH and KH, so add those if your fish need them. Dose conditioner for new water by the bottle’s label.
How to test your water →Choose hose reach and a container or water-handling method that suits the planned change amount. Avoid moving a filled tank for maintenance access.
Choose water-change tools →Keep plugs dry and labeled, with a drip loop on every cord as the manuals show. If you add a battery backup air pump, test it before you need it.
Set up the power safely →
Then set it all up, step by step, and cycle the tank before you add fish.
Checkmarks aren’t saved when you leave the page; print it to keep them.
Measure before you buy
- The tank’s outside size and the stand it needs.
- The inside size up to the waterline, and how much room gravel and rock take, for your actual water volume.
- The rim trim, the gap to the wall, the lid openings and where the light mounts.
- The cabinet opening, the hose route and room to lift out filter media.
- How you’ll carry water, the bucket size and where the outlets are.
With those numbers, use the water volume calculator and the electricity cost calculator. The first-year cost calculator keeps a line for every supply, even before you know its price.
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