Shopping Cart
Your cart is empty.
HACKER SAFE certified sites prevent over 99.9% of hacker crime.
FishTanksDirect.com is a BBB Accredited Business. Click for the BBB Business Review of this Aquariums - Dealers in North Venice FL
Browse Categories
Browse by Manufacturer
Mailing Lists





50 Gallons or Less & Complete Kits

Hydrometers/Refractometers

A good quality hydrometer is important to main optimal salinity. There is a wide range of choices for salinity. Many prefer a low salinity for fish only systems, around 1.018. If you plan on having liverock, corals, snails, shrimps, etc. It would be best to keep your salinity a little higher. The corals generally prefer 1.025, but you can compromise and run anything from 1.020 to 1.025. The most important thing is to keep consistent. You do not necessary have to get the most expensive tester on the market, even the low priced little SeaTest models will work. We would recommend having it compared to a Refractometer at your local pet shop so you can verify the results.


Displaying products 1 - 8 of 8 results
Fluval Sea Hydrometer
Your Price: $8.99
Fluval Sea Hydrometer
Instant Ocean Hydrometer
Your Price: $7.82
Instant Ocean Hydrometer
Coral Life Deep Six Hydrometers
Your Price: $7.99
Coral Life Deep Six Hydrometers
Coral Life Deep Six Hydrometers
Red Sea Hydrometer with Thermometer
Your Price: $13.99
Red Sea Hydrometer with Thermometer
Red Sea Hydrometer-Thermometer
JBJ C-Scope Salinity Refractometer
Your Price: $64.99
JBJ C-Scope Salinity Refractometer
H2Ocean Refractometer
Your Price: $74.99
H2Ocean Refractometer
Aqua Medic Refractometer
Your Price: $95.99
Aqua Medic Refractometer