Caring for your Marine

Continuum Aquatics has developed a line of cutting edge chemical and nutritional supplements, vitamins and filtration media to maintain your aquarium environments. Continuum products are thoroughly thought out, tediously tested, and made to the highest standards of quality, and are all here at Marine Fish Shop.

Marine Salt

We have a range of Marine Salt for your aquarium, by H2Ocean, Tropic Marin Pro-Reef and RedSea.

Keeping a clean environment

We have multiple ways of keeping the tank clean, including various cleaning accessories to help you keep it tip top for your marine fish.

Rocks

Check out our amazing Aquascape Natural Aquarium Rock

Aquascape Natural Aquarium Rock

Fully stocked for the maintenance of your marine environment

Clean Environment

Socks and Rollers

Covers and Kits

Filter
  • Out of stock
    Continuum Exxodus Nitryx Brick

    Continuum Exxodus Nitryx Brick

    Continuum Exxodus Nitryx Brick
    Continuum Exxodus Nitryx Brick is an extremely porous filtration medium designed to be used in all aquariums and aquatic systems for bio-filtration.

    £62.99
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  • -35%
    Continuum Exxodus Nitryx

    Continuum Exxodus Nitryx Removing Media

    Continuum Exxodus Nitryx Removing Media

    Continuum Exxodus Nitryx is an extremely porous filtration medium designed to be used in all aquariums and aquatic systems for bio-filtration.

    Price range: £9.74 through £25.99
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    Out of stock
    Continuum Exxodus Phosphyx

    Continuum Exxodus Phosphyx

    Continuum Exxodus Phosphyx
    Continuum Exxodus Phosphyx is an extremely porous filtration medium designed to be used in all aquariums and aquatic systems for chemical filtration (phosphate & silicate removal) as well…

    Price range: £19.82 through £37.04
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  • Out of stock
    Continuum Fraction

    Continuum Fraction 125ml

    Continuum Fraction 125ml

    Continuum 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…

    £7.49
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  • Rowa-Phos available at Marine Fish Shop

    Rowaphos 500g

    Rowaphos 500 grams

    £19.99
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  • RowaPhos 500 grams available at Marine Fish Shop

    Rowaphos 1000g

    Rowaphos 1000 grams

    £34.99
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  • Red Sea Filter Media Bags (pack of 2)

    Red Sea Filter Media Bags (pack of 2)

    Red Sea Filter Media Bags (pack of 2)

    £5.49
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  • -35%
    Continuum Reef Basis Calcium

    Continuum Reef Basis Calcium – 250ml

    Continuum Reef Basis Calcium – 250ml

    Continuum Reef Basis Calcium is a high quality, maximum strength ionic calcium solution designed to safely raise the calcium level in marine aquariums, providing essential…

    Original price was: £10.99.Current price is: £7.14.
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    Continuum Calcium

    Continuum Reef Basis Calcium 400grams

    Continuum Reef Basis Calcium

    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…

    Original price was: £24.49.Current price is: £15.92.
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  • -35%
    The Continuum advantage. 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. It contains no acetate, EDTA, gluconates, polygluconates or other unnecessary organics to pollute your aquarium. It is phosphate and silicate free. May be used simultaneously with Kalkwasser. Use in aquarium keeping. Proper control of calcium level is imperative for the health and growth of corals and many other invertebrates. If the calcium concentration is too low, growth rates will suffer. If it is too high, alkalinity or buffering capacity will be diminished, leading to possible instability of pH. Sufficient magnesium levels are also necessary to maintain the proper balance. It is therefore recommended that the hobbyist measure and control the levels of calcium, magnesium and alkalinity on a regular basis. Strontium is also required for formation of aragonite. Continuum recommends that you maintain a calcium level of between 410 and 450 mg/L (ppm), an alkalinity level of 7 to 11 dKH (2.5 to 4 meq/L), and a magnesium level of 1250 to 1350 mg/L (ppm). Note: Aquarists keeping SPS corals should consider keeping alkalinity at 7 to no more than 9 dKH (2.5 to 3.21 meq/L). Do not add calcium and buffering (alkalinity) products at the same time. Doing so will cause unnecessary precipitation and possible cloudiness. Directions and protocol. Dissolve 2 grams, about 1 teaspoon of product in 8 oz. ( 236 ml ) purified water. Add in an area of high flow directly to tank for each 20 gallons ( 76 L ) capacity, per day until the desired calcium level is reached. For best results, measure the calcium concentration and add as necessary to maintain between 410 and 450 mg/L (ppm). CAUTION: PRODUCT GETS VERY HOT WHEN MIXED WITH WATER, USE RUBBER GLOVES, AND ALWAYS MIX OUTSIDE THE TANK. ABSORBS MOISTURE, KEEP TIGHTLY CLOSED! Expert use. To dose, determine the amount of calcium consumption during the time it takes add the entire volume of your drip system. Determine the amount of Reef•Basis Calcium to add to your drip system in grams by multiplying your tank capacity in gallons by the amount you want to raise it in mg/l (ppm) and by 0.011. (Example: if you have a 20 gallon tank and you want to raise the level by 25 mg/l (ppm) with the entire dose, you would multiply 20 x .011 x 25 which equals 5.5 grams or about 2-1/2 teaspoons of Reef•Basis Calcium.) Caution: Keep out of reach of children. Product gets hot when mixed with water. Not for human consumption. Contains calcium chloride, if ingested drink water. If in eyes flush with water.

    Continuum Reef Basis Calcium 800grams

    Continuum Reef Basis Calcium

    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…

    Original price was: £31.99.Current price is: £20.80.
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  • -25%
    Continuum Reef Basis KH Buffer

    Continuum Reef Basis KH Buffer

    Continuum Reef Basis KH Buffer

    Continuum Reef Basis KH Buffer is a high quality, multi-component blended true buffering system designed to raise the alkalinity or buffering capacity of marine fish and…

    Original price was: £10.49.Current price is: £7.87.
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  • -20%
    Out of stock
    Continuum Reef Basis Magnesium

    Continuum Reef Basis Magnesium – 250ml

    Continuum Reef Basis Magnesium – 250ml

    Continuum Reef Basis Magnesium is a high quality, ionically balanced solution of hydrated magnesium salts designed to safely raise the magnesium level in marine aquariums,…

    Original price was: £8.99.Current price is: £7.19.
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  • Out of stock
    Continuum Labyrinth Carbon

    Continuum Labyrinth Carbon

    Continuum Labyrinth Carbon
    Continuum Labyrinth Carbon – All carbon is not created equal! It is all black, but that is where the similarity ends. Reef•Basis Labyrinth Carbon is a supreme quality,…

    Price range: £9.99 through £17.99
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  • -35%
    Out of stock
    Continuum Reef Basis Potassium

    Continuum Reef Basis Potassium – 250ml

    Continuum Reef Basis Potassium – 250ml

    Reef•Basis Potassium is a high quality, maximum strength ionic potassium solution which is stronger than most competing products and designed to safely raise the potassium…

    Original price was: £10.99.Current price is: £7.14.
    Select options This product has multiple variants. The options may be chosen on the product page
  • -35%
    Out of stock
    Continuum Reef Basis KH Buffer

    Continuum Reef Basis KH Buffer – 1KG

    Continuum Reef Basis KH Buffer – 1KG

    Continuum Reef Basis KH Buffer is a high quality, multi-component blended true buffering system designed to raise the alkalinity or buffering capacity of marine…

    Original price was: £28.99.Current price is: £18.84.
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  • Out of stock
    Continuum Reef Basis Strontium

    Continuum Reef Basis Strontium – 250ml

    Continuum Reef Basis Strontium – 250ml

    Reef•Basis Strontium is a high quality, maximum strength ionic strontium solution which is two to three times as strong as most competing products and designed…

    £10.99
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  • -35%
    Out of stock
    Continuum Reef•Basis Sustain

    Continuum Reef Basis Sustain Iodine – 250ml

    Continuum Reef Basis Sustain Iodine – 250ml

    Continuum Reef Basis Sustain Iodine is a unique, multicomponent iodine release system, designed to nourish organisms that require iodine. It is particularly useful for…

    Original price was: £15.99.Current price is: £10.39.
    Select options This product has multiple variants. The options may be chosen on the product page