Koi Medic Salinity Meter by Trans Instruments Dry These square reservoirs hold 27%

These square reservoirs hold 27% more water and have 27% more surface area than circular reservoirs

Five Blade Impeller ONLY (Green)

medium and fine Matala filter mats that reduce channeling

100% natural and safe for all fish

Koi Medic Salinity Meter by Trans Instruments Dry These square reservoirs hold 27%Requires solution, which is sold separately The Eco Series Koi Medic Salinity Meter is a very accurate, easy to use salinity meter. Simply turn on, dip into pond, and LCD display will display salt content. Includes protective case. Includes (4) 1. 5V button cell batteries. Economical: auto shutoff feature, 150hr battery life, low battery warning Durable: drop shock resistant up to 6' height, water resistant Specifications Units of Measurement % ppt