Marine Aquarium Supplies

At Swell UK, we carry a huge range of marine aquarium supplies. From a beginner saltwater tank starter kit to a fully equipped reef system for experienced aquascapers, you'll find everything you need. Whether you're looking for tanks, lighting, salt, or equipment, our marine range has all the products to allow you to build a healthy marine setup.

If you're looking for a saltwater tank, browse our marine aquariums, our selection has everything from nano desktop tanks to large, all-in-one kits with built-in equipment. Our range also includes industry leading brands like Red Sea, D&D, Aqua One, and even our very own Swell range. Pair your new tank with marine rock and substrate to lay the foundation for your reef.

Keep everything running smoothly with our marine lighting and equipment range, including LED lighting designed to support coral growth, protein skimmers, water pumps, and much more. A good filter and reliable pump are the best investments you can make for stable water quality.

Good water quality is essential to help a reef aquarium thrive. Stock up on marine salt, additives, and test kits, and try our marine salt calculator to easily mix the right concentration every time.

Finally, our marine accessories selection covers everything else, including frag plugs and glue for simple propagation, marine fish food, and cleaning tools and other essentials that'll keep your aquarium looking it's best.

New to the hobby? Our help guides are a great starting point for beginners.