Instant Ocean Full Range Hydrometer Accurate Salinity Testing for Saltwater Aquariums
$13.99
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Standard U.S. shipping: $12.99; free standard shipping on eligible qualifying orders of $100 or more. Specialty shipments are charged separately.
Shipping & Delivery
Standard/Economy: $12.99; free standard shipping on eligible qualifying orders of $100 or more.
Most in-stock orders process in 1–3 business days. Estimated standard transit is 5–12 business days after dispatch. Backorders, preorders, and special orders follow their stated lead times. Dates are estimates, and separate shipments may have separate charges.
Review the Shipping & Live Arrival Policy and final charges at checkout. International rates and specialty charges are separate from domestic standard offers.
Instant Ocean Full Range Hydrometer
Maintain proper salinity and keep your saltwater aquarium stable with the Instant Ocean Full Range Hydrometer.
This easy to use hydrometer provides quick and reliable readings of specific gravity, helping you ensure your tank stays within the ideal salinity range for fish, corals, and invertebrates. Designed for simplicity and consistency, it’s an essential tool for both beginners and experienced hobbyists.
Accurate salinity is critical to reducing stress on your livestock and maintaining a healthy, balanced aquarium.
What It Measures
- Specific gravity (salinity levels) in saltwater aquariums
Why It Matters
Incorrect salinity levels can lead to stress, illness, or loss of fish and invertebrates.
Regular testing helps maintain stability and prevents sudden swings that can impact your aquarium.
Perfect For
- Saltwater aquariums
- Fish-only (FOWLR) systems
- Reef tanks
- New tank setups and routine monitoring
Features
- Full range salinity measurement
- Easy to read scale
- Simple, beginner friendly design
- Reliable and consistent results
Pro Tip
For best results, pair this hydrometer with a water test kit and a quality water conditioner to fully monitor and maintain your aquarium’s water quality.