Aqua One Marine Hydrometer & Thermometer

We are an authorised and approved Aqua One stockist

If you're looking to purchase a spare part, accessory or filter replacement for your Aqua One aquarium or Filter, you can be confident that you are purchasing a genuine and original Aqua One Spare Part, from an authorised and Approved Stockist. This means that you will ALWAYS get full product support and of course a full manufacturers warranty on all products

Buy Official Aqua One Spares

Every Aqua One aquarium or filter product purchased here at Aqua One Parts is a genuine, Aqua One branded spare part or accessory, designed specifically for use in your Aqua One setup.

We are UK's only Dedicated Aqua One Retailer

We are the only dedicated Aqua One retailer in the UK, servicing many thousands of Aqua One customers every year and if you're considering purchasing a from us, you can do so with complete confidence that we are the UK's largest and most experienced Aqua One stockist.

An easy to and extremely accurate that also has a decent thermometer built in. A clear view green segment aids determination of the correct values. The hydrometer is weighted to make sure it always floats at the correct angle for testing.

◾ Combines thermometer and hydrometer
◾ Superior accuracy
◾ Easy to read
◾ Fully warranted

Aqua One Hydrometer

A simple hydrometer is still the best, easiest way to measure the salt content of a marine aquarium. The Aqua One hydrometer also features a built in thermometer, allowing two essential water quality parameters to be tested at the same time. Ideal test zones are indicated for both temperature and specific gravity.