“Mineral Pool” copper tests Shows correct level for copperEasier to use than drop tests, more accurate than other test stripsCan be used with ionizers, mineral cartridges, and copper sulfate25 tests per bottle.
“Mineral Pool” copper tests Shows correct level for copperEasier to use than drop tests, more accurate than other test stripsCan be used with ionizers, mineral cartridges, and copper sulfate25 tests per bottle.