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Sawtooth algae (Caulerpa serrulata) 

Suitable for sumps and refugium’s 

Approximate weight of algae shipped: 25g 

Shipped loose with runners and fronds, will root to substrate. 

Cultured in the UK by Essex Marine Aquatics. 


Macro algae are commonly used in marine aquarium sumps and refugium’s to export nutrients such as nitrate and phosphate.  

Macro algae will take up these nutrients to fuel growth; as the algae grows you simply harvest excess amounts thereby removing the nutrients locked inside from the system for good. 

Apart from nutrient export macro algae are often grown for aesthetic purposes also, their colour and movement seem fitting in a marine environment. Most types of algae should not be grown in the display tank but rather in a separate space such as a refugium, this ensures the rapid growth and invasive nature of some species cannot overwhelm the display area.  

Dense macro algae will provide the perfect environment for zooplankton to flourish providing a natural, constant and healthy food source for corals, fish and other aquarium inhabitants.


Returns & Guarantees relating to Macro Algae

The item will be sent in good condition and as described in terms of weight and fixings. If the item arrives damaged or you are unhappy with the item when it arrives for any reason please contact us within 24 hours and provide photographic evidence so that we may resolve any issues for you quickly.

Why choose us?

Customer needs and animal care are at the centre of our business

We believe you can only get value if you get quality too and most of our customers agree we’ve got the balance right. From gentle acclimation and monitoring tank mates to tailored diets we go the extra mile to ensure we offer happy, healthy, livestock.

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Really nice shop. Nice coral and fish selection and prices are good too. Fish food is also a good quality and price. Will be visiting again soon 👍

Dee Stan

May be smaller then some shops in the area but very well priced and can always find a little jem or two in here I never leave without something new for the tank

Richard Fincham