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Success in keeping marine fish is dependant on maintaining the highest possible water quality. Any deviation from anything other than perfect water conditions will lead to diseased and dying fish. Thankfully there is now a wide range of high quality marine additives, treatments and test kits that will help you maintain your tank water quality at its very best.

Continuum, Brightwell, Seachem and Tetra all offer specialist additives and treatments for marine aquaria from general additives like dechlorinators and filter aid, to specific treatments to encourage growth and vitality of coralline, change iodine levels or boost strontium levels.

Click here for our range test kits: Aquarium Test Kits

  • Alka Reef 10 Image

    Alka Reef 10

    Alka Reef 10 Capsules Carbonate and hydrogen carbonate ions are used by calcifying organisms, such as corals and coralline algae, in order to form the calcium carbonate of their rigid structures. It is therefore vital that these ions are regularly added...

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  • Brightwell Aquatics Garlic Power Treatment 30ml - image 1

    Brightwell Aquatics Garlic Power Treatment 30ml

    Brightwell Aquatics Garlic Power 30ml Aquatics Garlic Power consists solely of the preserved extract of raw garlic. In aquaria, the use of garlic is often associated with improving the health of fishes, particularly in systems experiencing difficulty...

    Out of stock
  • Brightwell Aquatics Phosphat-E- group image Brightwell Aquatics Phosphat-E - Image 1

    Brightwell Aquatics Phosphat-E

    Brightwell PHOSPHAT-E 250ml/500ml *Please select your required size from the menu Phosphate, while required in miniscule amounts by living organisms for proper functioning, can indirectly negatively impact the overall appearance of an aquarium system if...

    £26.95 - £35.99
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  • Brightwell Koral MD 125ml - Coral and Frag Dip

    Brightwell Aquatics Koral MD 125ml- Coral and Frag Dip Koral MD Coral Dip does not contain iodine. It is a prophylactic cleaner, dip and conditioner for use in cleaning new corals, live rock, and empty coral fragging & holding facilities. It will...

    MSRP: £13.99
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  • Calci Reef 10 Image

    Calci Reef 10

    Calci Reef Calcium and Magnesium Booster 10 Capsules A large number of marine organisms, such as corals and coralline calcifying algae, use calcium and carbonates to synthesise their rigid structures. Calcireef+ provides calcium and magnesium. It also...

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  • Continuum Bactergen Marine Microbe Culture 250ml Image

    Continuum Bactergen Marine Microbe Culture 250ml

    BacterGen•M is a breakthrough in microbial cultures and is specifically designed for marine aquariums. Whereas most competing products, designed primarily for freshwater aquariums, rarely work well in saltwater environments, BacterGen•M will...

    MSRP: £15.99
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  • Continuum Coralline Purple 250ml Image

    Continuum Coralline Purple 250ml

    The Continuum advantage Coralline Purple•CX is specifically designed to encourage and accelerate growth of purple and pink coralline algae without fertilizing green algae. Because it is made from expensive marine aragonite, with added supporting...

    MSRP: £15.99
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  • Continuum Fraction Chloramine Ammonia Remover 250ml Image

    Continuum Fraction Chloramine Ammonia Remover 250ml

    Fraction is a technologically advanced, premium quality, maximum strength water conditioner that makes tap water immediately safe for freshwater or marine aquarium use. It is also the premium product for use directly in a freshwater or marine aquarium to...

    MSRP: £13.99
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  • Continuum Marine Elements 250ml Image

    Continuum Marine Elements T 250ml - Fish

    Marine Elements•T mineral complex replaces crucial minor and trace minerals lost to carbon filtration, protein skimming and ozone. It contains no heavy metals, phosphates, silicates, gluconates, or polygluconates.Use in aquarium keeping.Minor and...

    MSRP: £15.99
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  • Continuum Reef Basis Calcium Dry 200g Image

    Continuum Reef Basis Calcium Dry 200g

    Reef•Basis Calcium is a high purity calcium in dry form, designed to safely raise the calcium level in marine aquariums, providing essential calcium for increased growth rates in corals, coraline algae, crustaceans and many other marine organisms...

    MSRP: £21.99
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