http://www.automatedaquariums.com/h_salt.htm
does anyone have one of these - any feedback on how it's working for ya?
looks promising - based on the cost, it's about the same as a refractometer, but not needing any light or little droplets of water, or a dunk in the tank (like a hydrometer)!
does anyone have one of these - any feedback on how it's working for ya?
looks promising - based on the cost, it's about the same as a refractometer, but not needing any light or little droplets of water, or a dunk in the tank (like a hydrometer)!