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Ideal for Koi ponds
Breaks down organic waste and detritus
Distribute evenly across pond surface
and simple to maintain
ASF Sea Test Hydrometer Ideal for Koi pondsAquarium Systems SeaTest Hydrometer Accurate Salinity & Specific Gravity Measurement The SeaTest Hydrometer by Aquarium Systems is a precise, easy to use instrument designed to measure both the specific gravity and salinity of water in tropical marine aquariums. With a measurement range of 1. 014 to 1. 030 specific gravity and 2040 ppt salinity, it delivers reliable readings to help maintain a healthy, stable environment for marine life. Built from