Branded Aquarium Sizes: Kit & Reef-Ready Tank Dimensions
This is a companion reference to “A Cheat Sheet to Fish Tank Gallon Sizes and Dimensions” (see our complete aquarium sizes and dimensions chart). That guide covers standard and specialty-shaped tank sizes that have stayed essentially unchanged for decades. This page covers something different: specific branded kits and reef-ready/drilled tanks, where dimensions are tied to a manufacturer’s current product line and can change when a company updates a mold, discontinues a SKU, or a retailer misquotes a spec sheet. Because of that, treat this page as needing a refresh check more often than the core sizing guide, and always confirm against the manufacturer’s current listing before buying a stand, lid, or sump. Mid-Sized Branded Aquarium Kits (20–46 Gallon) Beyond generic “standard” dimensions, many aquariums in this size range are also sold as branded kits, and dimensions can vary by brand, model, and shape. Kit Dimensions (L Ă— W Ă— H, in) Shape 20 gallon high (Marineland / Tetra / Aqueon standard) 24 Ă— 12 Ă— 16 High rectangular 26 gallon Aqueon Bow Front LED Kit 24.125 Ă— 14.75 Ă— 20.875 Bow front 26 gallon Marineland Bow Front 24.125 Ă— 14.75 Ă— 20.875 Bow front 29 gallon standard kit 30.25 Ă— 12.5 Ă— 18.75 Standard rectangular 36 gallon Aqueon Bow Front 30.25 Ă— 15.5 Ă— 20.875* Bow front 40 gallon breeder 36.25 Ă— 18.25 Ă— 17 Breeder rectangular 46 gallon Aqueon / Marineland Bow Front 36.375 Ă— 16.375 Ă— 20.875 Bow front The 26- and 46-gallon figures above match Aqueon’s own current (2023) product catalog exactly. *The 36-gallon bow front does not appear in that current catalog, so it may be an older or discontinued size still sold through retailer inventory — the figure here is sourced independently (Aqueon’s product page plus one retailer), not from Aqueon’s current official spec sheet. Confirm it’s still in production before ordering fitted equipment. Aqueon Critical Dimensions specifications (official 2023 PDF) Aqueon Bow Front Aquariums (product page) NAFB Aquarium — Aqueon 36-gallon bow front spec Large Branded Aquariums: Reef-Ready Tanks At 65+ gallons, a meaningful share of what’s sold are reef-ready drilled tanks built for sump filtration — worth listing separately since a drilled overflow box changes usable footprint and setup requirements versus a plain glass tank of the same listed size. The figures below are based on Aqueon’s own published manufacturer specifications rather than retailer listings. Because product lines and catalogs update over time, verify the exact SKU against Aqueon’s current listing before ordering fitted equipment. Size Dimensions (L Ă— W Ă— H, in) Type 65 gallon 36.375 Ă— 18.375 Ă— 25 Drilled, sump-ready 75 gallon 48.5 Ă— 18.5 Ă— 21.125 Drilled, sump-ready 90 gallon 48.5 Ă— 18.5 Ă— 25.375 Drilled, sump-ready 125 gallon 72.5 Ă— 18.5 Ă— 23.375 Drilled, sump-ready 150 gallon 72.5 Ă— 18.5 Ă— 29.5 Drilled, sump-ready 210 gallon 72.5 Ă— 24.5 Ă— 29.625 Drilled, sump-ready Important: don’t assume a standard Aqueon aquarium and an Aqueon Reef-Ready aquarium of the same gallon capacity share identical dimensions. For the 90- and 125-gallon sizes specifically, Aqueon’s standard (undrilled) tank runs about a quarter-inch shorter than the Reef-Ready version of the same gallon count — the drilled overflow chamber appears to add a small amount of height. Always confirm which product line a listing is describing, and verify the exact SKU, before ordering a stand, lid, or plumbing. Bluefish Aquarium — 125 Gallon Reef-Ready (MegaFlow) spec A reef-ready tank of the same length and width as a standard version isn’t a plug-and-play swap — it needs a sump, plumbing, and a stand designed around that plumbing. Aqueon Critical Dimensions specifications (official 2023 PDF) Aqueon Reef-Ready Aquariums (product page) Why Branded Aquarium Dimensions Need to Be Verified Note: Last fact-checked September 2026 against Aqueon’s own official Critical Dimensions PDF (linked above). If you’re maintaining this page, that document is the fastest way to re-verify every branded Aqueon figure here in one pass — recheck it, and the Marineland-branded rows against Marineland’s own spec sheet, on a regular refresh schedule. Johnson ColemanDr. Johnson Coleman is a dedicated veterinary expert with over 10 years of hands-on experience in animal health and wellness. His mission is to help pets live longer, happier lives through compassionate care, practical guidance, and a genuine love for animals. After earning his Doctor of Veterinary Medicine (DVM) degree, Dr. Coleman spent a decade working in both private clinics and community shelters, where he gained deep expertise in preventive medicine, pet nutrition, and behavioral care. He believes that pet owners deserve reliable, easy-to-understand information about their companions’ health. Through his writing, Dr. Coleman breaks down complex veterinary topics into friendly, actionable advice that helps readers make informed decisions for their pets. Outside of his professional work, Dr. Coleman volunteers with local animal rescue groups and enjoys spending time outdoors with his two golden retrievers. His lifelong dedication to animal welfare continues to inspire his work and connect with pet lovers around the world.
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