ANS Opti Glass I-Surface Test Meter It is recommended to use

It is recommended to use special-purpose filter cartridges for optimized effect

STOPS IN TIME: Reliable protection against blockages and dry running thanks to the built-in OASE Environmental Function Control

for example in a pump chamber

ANS Naturesand Misty Grey Sand

surpassing a hydrometer in precision

ANS Opti Glass I-Surface Test Meter It is recommended to useLily Pipe Surface Skimmer 13 12 16 17 16 22 Effectively and efficiently drowns the organism and protein floats and on the water surface to go through water more easily and help photosynthesis of water plants. 360 degreee in flow design allows water flows get through from all directions without clogging and provides convenience in cleaning. Patent self floating design can automatically adjust water level without effecting the function of filter system.