Water Measurements
Hydrometers for salt water.
There are 3 products in Water Measurements.
Instant Ocean Hydrometer
This full range, gravity meter is an easy to use scientific instrument that measures the salinity and specific gravity of warm water aquariums.
Seapets price
£9.99
Waterlife Seadrometer
SeaDrometer is a scientific instrument used to measure the correct salinity level for the type of marine creatures in your set-up. The fishes' indigenous region dictates the level of salinity they ...
Seapets price
£14.99
Tetratec Comfort Hydrometer
Marine fish and corals require stable water conditions, which makes regular checking of salinity important. It's also necessary to check salinity when making up new water for water changes. The Tet...
RRP: £17.89
Seapets price
£13.95
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Nutrafin Fish Food Offer
Nutrafin Max Goldfish Flakes and Tropical Flakes have an extra 50% in the 38g size. You receive 57g for the price of 38g while stocks last. Prices from £3.09.
Grow your plants beautifully with the Pressurised Fluval CO2 Kits.
These great Fluval CO2 kits will make all the difference to the plants in your aquarium, providing the water conditions and lighting is good of course. Great prices at Seapets always.
Nutrafin Test Kits 3 For 2
These popular test kits are Buy Three for the Price of Two. Choose any three single test kits and the lowest price one will be free. Now you can really check what the water conditions are like.
Tropic Marin Salt as used in aquariums worldwide
The complete range of TMC and other major brands of salt, delivered to your door from Seapets, all at the very best prices.
Latest Products
Lowest Price On Polyfilters
This amazing filter medium is now available at fantastic low prices from Seapets, clear your freshwater or saltwater aquarium of toxins, medications and other unwanted pollutants, quickly, easily and now, cheaply.
Coral Pro Sea Salt is specially formulated for use with reverse osmosis water, an innovative new salt formula designed to meet the needs of today's advanced hobbyist. 22kg bucket makes 660 L (175 gal) Seapets price Just £49.95
Gift Vouchers by Seapets
Stuck for a gift idea? With our fantastic range of pet and aquatic products our Gift Vouchers make an ideal solution for your pet loving friend, available now!
Go to Gift Vouchers
Buying and advice guide
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Tel 0845 230 4777
(local rate)
or 01206 213338
