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Premium Fish Tanks Built for Every Aquarist
TopFin delivers crystal-clear glass tanks, whisper-quiet filtration, and everything you need to set up a thriving aquarium — from your first betta bowl to a stunning 29-gallon showcase. Beginner-friendly. Expert-approved.
All-time favourite
Top Fin Fish Tanks - Full Product Range
TopFin Essentials 5-Gallon Betta Starter Kit
If you’re stepping into the world of fishkeeping for the first time, the TopFin Essentials 5-Gallon Betta Starter Kit is designed to make your journey seamless. This compact yet thoughtfully complete kit includes a crystal-clear glass tank, LED hood lighting that enhances your betta’s vivid colours, a gentle low-flow power filter that won’t toss your betta around, and a fully submersible adjustable heater to maintain the 76–82°F temperature range bettas need to thrive. Assembly is beginner-proof — most owners have water running within 30 minutes.
TopFin Essentials 10-Gallon Aquarium Starter Kit
The 10-gallon size is the sweet spot of beginner aquariums — big enough for a small community of fish, small enough to manage easily — and the TopFin Essentials 10-Gallon Starter Kit is the definitive entry in this category. The kit bundles a full-size glass aquarium with a fluorescent hood complete with bulbs, a Top Fin Power Filter 10 loaded with a cartridge, a 50-watt adjustable UL-rated heater, a 4-inch nylon net, a strip thermometer, and sample sachets of fish food, water conditioner, and beneficial bacteria starter.
TopFin Captivate 20-Gallon Aquarium Starter Kit
For aquarists ready to step up from a nano setup, the TopFin Captivate 20-Gallon Starter Kit is an ideal upgrade that unlocks a whole new world of aquascaping possibilities. A 20-gallon tank provides significantly more swimming space for larger species, larger community groups, and the kind of lush planted scapes you see on social media. This kit includes the 24″ × 12″ × 20″ glass aquarium, a full 24-inch fluorescent hood with light, a Top Fin Power Filter 20 with cartridge, a 100-watt adjustable heater, a strip thermometer, fish net, and the usual sample packs for water care. The 100W heater is rated for tanks up to 20 gallons
Why TopFin Tanks®
We cover every product in the Top Fin® range with real, hands-on experience. No manufacturer fluff. No guesswork. Just honest, specific guidance that helps you build a tank your fish will truly thrive in.
Fish-first advice
Every recommendation — filter flow, heater wattage, stocking level — is guided by what is best for your fish, not what is easiest to write about.
Honest pros & cons
We tell you when a product has weaknesses, not just strengths. You deserve the full picture before you spend your money — and we give it to you.
Real specs, not vague ranges
Exact dimensions, wattages, flow rates, and stocking numbers — not "medium-sized tanks" or "a few fish." Specific figures you can actually act on.
Troubleshooting that works
Filter not pumping? Heater not reaching temp? We have diagnosed and fixed every common Top Fin issue — our guides tell you exactly what to do and why it works.
From setup to long-term care
Beginner walkthroughs, nitrogen cycle guides, plant compatibility charts, and maintenance schedules — we cover the full journey, not just the unboxing moment.
No ads. No pop-ups. No fluff.
Clean, fast pages with the information you came for. Our only income is Amazon affiliate commissions — fully disclosed, never influencing what we write.
About Top Fin® Tanks & Aquariums
Top Fin® is one of the most recognized aquarium brands in the United States, sold exclusively through PetSmart and available on Amazon. The brand’s product range covers everything an aquarist needs from compact 5-gallon betta fish tanks to large 29-gallon showcase aquariums, SilentStream™ power filters, submersible heaters, LED lighting, water conditioners, and a full range of décor and accessories.
Whether you’re searching for your first Top Fin fish tank, upgrading to a larger Top Fin aquarium, or looking for replacement parts like filter cartridges and heater elements, this site covers the complete Top Fin product range.
Top Fin aquariums are designed for beginners and experienced aquarists alike. The all-in-one starter kits remove every barrier to entry tank, filter, heater, lighting and water care all in one box while the individual components like the SilentStream™ filter and CH150 heater satisfy experienced hobbyists who want reliable, affordable equipment.
What pets say about our shop
Clients Testimonials
My betta Sapphire went from looking lethargic in a tiny bowl to absolutely thriving in the TopFin 5-gallon kit. Within two days his colours had intensified noticeably and he started building bubble nests — a clear sign of a happy, healthy betta. The filter is gentle and the heater holds exactly 78°F. I’m obsessed.
Glen Sparkle, MIAMI
I upgraded from a branded competitor’s filter to the TopFin SilentStream and the difference was immediate — crystal clear water within 36 hours and near-total silence. I work from home and used to be constantly aware of the filter noise. Now I sometimes check if it’s even running. 10 out of 10.
Glenda Richards, CALIFORNIA
The 10-gallon starter kit was the perfect choice for my first community tank. Had it cycling and running within 45 minutes, fish in after a week. The instructions were remarkably clear and the included water care samples were genuinely useful. Six months later, my neon tetras and corydoras are thriving.
Sue Sparkle, NY
FAQ's
Who makes Top Fin aquariums?
Top Fin® is an exclusive aquarium brand sold through PetSmart stores across the United States and available on Amazon. The brand was developed as PetSmart's in-house aquarium line, offering tanks, filters, heaters, lighting, water treatments, and accessories across all price points. Unlike generic imports, Top Fin products are purpose-designed for the US pet market with support available through PetSmart retail locations nationwide. The brand has been available for over 25 years and has accumulated tens of thousands of verified reviews across its product range.
Are Top Fin aquariums good quality?
Yes — Top Fin consistently earns 4.4–4.7 star ratings across its product range on Amazon, based on tens of thousands of verified buyer reviews. The glass construction is clear and durable, silicone seals hold well over years of use, and the SilentStream™ filter technology is widely praised as near-silent compared to competing filters at the same price. Top Fin sits in the mid-range of aquarium brands — not budget import quality, but not the premium tier either. For beginners and intermediate aquarists, it represents excellent value for money.
What size Top Fin tank should a beginner start with?
For most beginners, the Top Fin 5-gallon or 10-gallon starter kit is the right entry point. The 5-gallon is ideal for a single betta fish and fits on a desk or countertop. The 10-gallon opens up community fish options — neon tetras, guppies, corydoras, and cherry shrimp — and is still easy to maintain. Counter-intuitively, larger tanks are actually easier to keep stable than tiny ones, because water parameters fluctuate less in greater volumes. Top Fin offers complete starter kits at 5, 10, 20, and 29-gallon sizes — all include the tank, filter, heater, lighting, and water care essentials in one box.
Is the Top Fin 5-gallon tank good for betta fish?
A Top Fin 10-gallon fish tank supports a range of beginner-friendly community fish. Good choices include: neon tetras (school of 6), guppies (4–6), endler's livebearers (6–8), corydoras catfish (4–6 dwarf species), cherry shrimp (10–15), and nerite snails (2–3). Avoid goldfish — they produce too much waste for a 10-gallon. One male betta can also be kept alone in a 10-gallon with excellent results. Always let your tank fully cycle before adding fish, and do not overstock — the one inch of fish per gallon guideline is a useful starting rule.
What Top Fin tank sizes are available?
Top Fin offers aquariums across a wide range of sizes: 2-gallon (nano/desktop), 5-gallon, 6-gallon corner tank, 8-gallon, 10-gallon (most popular beginner size), 20-gallon, 29-gallon, 30-gallon, 37-gallon, 40-gallon, and 50-gallon. Specialty shapes include the column tank, corner tank, bowfront, half-moon, and octagon designs. Complete starter kits (with filter, heater, and lighting included) are available at 5, 10, 20, and 29-gallon sizes. Standalone glass aquariums without equipment are available across the full size range.