Aquarium Hydrometer


  • #390-13” Specific Gravity Hydrometer 1.000- 1.060 Sp.Gr.
  • S23 Wooden Hydrometer Storage/ Usage Rack


Salt Water Aquarium Hydrometer. Specific Gravity 1.000 – 1.060 with a green zone from 1.020 – 1.025. Perfect for live lobster tanks!

Free shipping to the lower 48 states only.

If you have any questions about our products, please give us a call. (717) 453-7171
We have trained technicians waiting to answer your questions!
Our hours of operation are Monday thru Thursday 7 AM-5 PM EST.