STERAZIN is used or the control of gill and body parasites which cause fish to flick when no symptoms are visible to the unaided eye. STERAZIN will also aid the control of internal parasites such as Round Worm, Thread Worm, and Intestinal Worm. In order to destroy the parasites in all stages of their life cycle you will need to use the product on days 1, 3, 6, 8 and 10. STERAZIN may also be used to aid the sterilisation of aquatic plants and is highly biodegradable.

Do not use when crustaceans, echinoderms, rays, seawater sharks, pirahna, sturgeon or sterlets and related species are present. In these instances use Waterlife PARAGON.

Suitable for seawater, tropical freshwater and coldwater aquaria.

Available in:
60ml (5 day course for 180 litres)
120ml (5 day course for 360 litres)
250ml (5 day course for 500 litres)
500ml Professional is Double Strength (5 day course for 2977 litres)

Aquacadabra acts as credit broker/intermediary and not as a lender.

Klarna's credit products are provided by Klarna Bank AB, which is authorised and regulated by the Swedish Financial Services Authority, with limited supervision by the Financial Conduct Authority. More information can be found here.

Newpay finance options are provided through Deko’s platform by NewDay. P.D. Aquatics Ltd, t/a Aquacadabra is an Introducer Appointed Representative of Pay4Later Ltd, t/a Deko, which is authorised and regulated by the Financial Conduct Authority (ref no 728646) and is a credit broker, not a lender. NewDay Ltd is authorised and regulated by the Financial Conduct Authority (ref no 690292) and is authorised by the Financial Conduct Authority under the Payment Services Regulations 2017 for the provision of payment services (ref no 555318). More information can be found by clicking the newpay option above, or in the Newpay FAQs.

We really want you to be happy with the product that you've received. If however, when the goods arrive they're not what you want, then no problem - we have a 60 day no quibble return guarantee. Just let us know that you're going to return the item(s) by contacting us(stating your Order Number) and complete the returns packing slip that will have been included with your delivery. This will help us to quickly identify the item that you have returned (unopened and unused) - and we'll put a refund through for you.