Seachem MultiTest Phosphate measures inorganic phosphates down to 0.05 mg/l, producing a unique and easy to read yellow-green-blue colour range in marine and freshwater. 75 Tests. Phosphates, together with silicates are often responsible for nuisance algaes, particularly within reef aquarium.

Should you have an issue with algae within your aquarium, test for both silicates and phosphates. Should you find high levels of either, products such as Rowaphos or Seachem Phosguard can be used to reduce them, and increase the number of water changes you undertake. Before this however, it's also a good idea to check your tap water - as if you have high levels of phosphates and silicates in your tap water, water changes won't help. In these circumstances, the best approach is to swap to Reverse Osmosis (RO) water, which will have the silicates and phosphates removed.

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.