The API Spare Test Tubes provide aquarists and pond keepers with reliable testing tools for monitoring water quality. Made from durable, high-clarity glass, these test tubes are designed for precision and longevity, ensuring accurate readings every time they are used. Each tube comes with a screw-top cap made of sturdy plastic, which securely prevents spills and contamination during testing. These replacement test tubes are compatible with all API Liquid Test Kits, a versatile option that suits both beginners and seasoned hobbyists.

• Durable glass construction for high clarity and precision.
• Compatible with all API Liquid Test Kits.
• Screw-top plastic caps to prevent leaks.
• Available in multiple pack sizes: 1, 3, 5, 10, and box of 24.

These test tubes are an ideal choice for those looking to maintain the integrity of their aquatic environments with frequent testing. The availability of different pack sizes offers flexibility to meet varying needs based on testing frequency and scale.

• Material: High-clarity glass
• Cap Type: Screw-top plastic
• Compatibility: API Liquid Test Kits
• Pack Sizes: 1, 3, 5, 10, 24

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.