Marine Chemicals and Additives
Elements, coral food, bacteria and pest and disease treatments for reef aquariums.
How to choose?Advice and care
How to choose reef supplements
A supplement makes sense when a test shows an element is running low.
By the test
Add iodine, potassium or strontium only when a test shows a low level.
Coral nutrition
Amino acids and vitamins support coral growth and colour.
Pests
An aiptasia remover is applied straight onto the anemone.
Popular brands
All brandsFrequently asked questions
What are probiotic bacteria for?
Together with their nutrient solution they help keep nitrate and phosphate low. Dose them regularly as the maker instructs.
Why dip new corals?
A dip helps remove pests and parasites from a coral before they reach the tank.
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Reef aquarium water changes every day: corals, algae and bacteria consume elements, while the protein skimmer and filter media remove some of them. Regular water changes restore much of the balance, but in a fast-growing reef they may not be enough. These products help fill specific gaps and keep the biology balanced.
They fall into several groups: single elements such as iodine, potassium, iron, fluoride and strontium; amino acids and vitamins for corals; nitrifying and probiotic bacteria with their nutrient solution; fish food additives; and treatments for pests and diseases. Nitrifying bacteria are especially useful when starting a new aquarium.
Do not add everything at once or double a dose when results are slow. Introduce one new product at a time to see how the corals respond, and keep a log of doses and test results. Overdosing can trigger an algae outbreak or harm corals.