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Aquarium Water Testing & Aquarium Water Treatments

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Fish looking a little rough around the gills - or perhaps you can't spot them through the murky water? There's no need to fret: OnBuy's tank testing and treatment range is here to help! Spanning solutions to fix your friends and the water itself, dip in and discover all you need for a taken-care-of tank. Read More >

About Aquarium Water Testing & Aquarium Water Treatments

Fish tank water testing

Any fish owner will know keeping an eye on the chemical levels in your tank is essential for a happy, healthy shoal - and luckily, OnBuy's aquarium water testing kit range has all you need to stay in the know about their home.

Showcasing ammonia test kits for aquariums and ways to check for alkalinity, we've got it all; you'll even find nifty fish tank water testing kits that'll let you check for an array of chemical levels with ease.

Fish tank water treatments

And when you've put the testing products to work, you'll want to turn your attention to our water treatments for aquariums to find a solution - no matter if you're hunting for an aquarium algae remover to spruce up your tank or a hard-working water dechlorinator for fish!

Plus, with a selection of fish tank water conditioners and various other picks to keep your fishy friends' home clean, we've rounded up all the essentials that'll help you sort your set-up with ease. Phew!

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