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Aquarium & Pool

SeaClear Acrylic Aquarium Combos

The cast-acrylic tank you can buy off a pet-store shelf: 20, 29, and 50-gallon combos with a fitted hood and light, a lifetime leak warranty from CASCO Group, and thirty-plus years of owners who dropped them and kept using them. Small top openings and a weak stock light are the trade-offs.

4.1
About $350 for the 50-gallon combo (Petco, 2021 listing); varies by retailer
Check Price

Pros

  • Cast acrylic at about half the weight of the same glass tank; a reviewer dropped one twice in two years with no cracks
  • Chemically bonded, near-invisible seams and a claimed 4 percent clarity edge over glass
  • Lifetime warranty against leakage to the original purchaser (send the card within 30 days)
  • Combo ships with a fitted hood, reflector, and light; clear, black, or cobalt blue backs
  • Stocked at Amazon, Petco, and PetSmart; no lead time, no freight truck

Cons

  • Top access openings are small, which makes aquascaping and cleaning awkward
  • The stock fluorescent light is too weak for plants or corals; newer sets bundle LEDs, older stock does not
  • Filter and heater are not included despite the 'combo' name
  • Retail listings omit the warranty terms; you have to go to the maker for them
  • Acrylic scratches, and a store-shelf tank gets handled more than a custom one

Specifications

MaterialCast acrylic, chemically bonded seams
Sizes20 gal 24×13×16 in; 29 gal 30×12×18 in (20 lb); 50 gal 36×15×20 in
IncludedAquarium, fitted hood, reflector, light fixture (LED on current sets); filter and heater sold separately
ColorsClear, black, cobalt blue
WeightAbout half of an equivalent glass tank
WarrantyLifetime against leakage, original purchaser, warranty card within 30 days
MakerCASCO Group, Inc. (California Aquarium Supply Corporation); SEA CLEAR mark registered 1991
DistributionNorth American Pet Products; Amazon, Petco, PetSmart
PricePetco listed the 50 gal black combo at $349.99 (2021); earlier listings $210–$280

Our Verdict

The right first acrylic tank if you want the weight and shatter advantages without ordering custom, and the 50-gallon is the size to get. Plan on an LED upgrade, buy the filter separately, and register the warranty the day it arrives.

4.1

Overview

SeaClear is the acrylic aquarium most people in the United States have actually seen, because it sits on the shelf at Petco and PetSmart next to the glass tanks. The brand belongs to CASCO Group, Inc., the California Aquarium Supply Corporation, which registered the SEA CLEAR mark in 1991 and SEA CLEAR ACRYLIC AQUARIUMS in 1992; current Amazon listings are sold under North American Pet Products, the distributor. CASCO says the tanks are built from cast acrylic at half the weight of glass and warrants them against leakage for as long as the original purchaser owns them, provided the warranty card is mailed within 30 days.

We have not set one up. This review draws on the maker's warranty language, a hands-on owner review that ran two years, a 2025 buyer's guide, and retail price records, listed at the end.

What you get

The combos come in three rectangular sizes: 20 gallons at 24 by 13 by 16 inches, 29 gallons at 30 by 12 by 18 inches and about 20 pounds, and 50 gallons at 36 by 15 by 20 inches. Each ships with a fitted hood, a reflector, and a light fixture; the current Amazon sets specify LED lighting, while older stock and the 2015 review below describe fluorescent tubes. Backs come in clear, black, or cobalt blue.

What you do not get is a filter or a heater. Every listing and guide we read makes the same point, and "combo" here means tank plus hood plus light, not a running system.

Build and durability

The Aquariphiles review is the most useful owner account we found. Over two years the reviewer dropped the 50-gallon tank twice without finding a crack, described the chemically bonded seams as invisible, credited the acrylic with a 4 percent clarity advantage over glass, and called the tank half the weight of the glass equivalent. The verdict was "well worth the money" and "an asset you'll treasure for life." Forum owners on SimplyDiscus report the same longevity, and a brand explainer quotes owners keeping SeaClear tanks 10 to 20 years.

Two complaints recur. The top opening is small: the reviewer wanted "some more space for easier access to the inside," and anyone who has reached into a 20-inch-deep tank through a hood cutout will know why. And the stock fluorescent light "doesn't provide sufficient light to grow algae and corals"; the reviewer's fix was LED bulbs, which the newer sets now ship with. Neither is a reason not to buy; both are reasons to budget for a light and to think about what you will plant.

Acrylic scratches, and a shelf tank is handled by more people before it reaches you than a custom one is. Inspect it in the store or on delivery, and read our scratch repair guide before you reach for a cleaning pad.

Warranty

The warranty is real and it is lifetime, but you will not find it on the retail page. Fish Tank Advisor's 2025 guide says flatly that the listings "don't have any warranty info, so you'll need to check in with the company first." CASCO's own terms: the aquarium is warranted against leakage to the original purchaser for as long as it is in their possession, and the card has to be completed and mailed within 30 days of purchase. Do that.

Price

Retailers do not publish stable prices for these, and every current listing we tried to check was blocked or unavailable at the time of writing. The price record we can cite is the UPC database: Petco listed the 50-gallon black combo at $349.99 in 2021, and earlier listings ran $209.99 at Meijer in 2016 and $279.99 on eBay in 2018. Treat $350 as the ballpark for the 50 and check Amazon or Petco for today's number. For comparison, a made-to-order Clear-For-Life 55-gallon rectangle is $760 without a hood or light.

Who should buy it

First-time acrylic buyers, anyone putting a tank on an upstairs floor or a light stand, and anyone who wants it this week rather than in five. Get the 50-gallon; Fish Tank Advisor's advice to "get the biggest you can afford" applies doubly to a tank you will otherwise outgrow. If you want a shape other than a rectangle, a built-in filter, or more than 50 gallons, that is Clear-For-Life territory. If you want a wall, it is Reynolds Polymer.

Sources