Evolution Aqua Dual Union Check Valves Tabs/Packs Each gallon treats up to

Each gallon treats up to 250

This is the standard blue Matala pad used by Helix Life Support in the Helix Pond Skimmer and the Helix Small Static Filter

Recommended weight limit of 350lb

this can lead to better water quality

0 meters (49

Evolution Aqua Dual Union Check Valves Tabs/Packs Each gallon treats up toEvolution Aqua check valves are essential when using a waterfall filter in conjunction with a pond skimmer. The check valve will prevent water in the filter from back flowing into the skimmer when the pump is switched off and keep water in bogs when the pump is turned off and other purposes. Check valves are also essential when an external pump is being used. The check valve prevents the water from draining back into the pond or reservoir, keeping the