Pro Clear RedFlex 4-in-1 Refugium 100 Subcategory_Plastic Enclosure 1ml will raise the Alkalinity

1ml will raise the Alkalinity of 100 liters (25gal) by 0

Don't let its size fool you

The enlarged rectangular inlet to the downflow pipe reduces turbulence

removing harmful dissolved organics and ensuring your aquarium water is as clean and healthy as possible

Use when filling a new pond

Pro Clear RedFlex 4-in-1 Refugium 100 Subcategory_Plastic Enclosure 1ml will raise the AlkalinityThe RedFlex 4 in 1 is a convertible sump that can be easily converted from saltwater to freshwater. This sump features a modern red and white acrylic design. Water flows through the two overflow ports, into our proprietary bubble diffusers and through the 4 inch 200 micron filter socks. Each sump includes an overflow panel where the water can escape into the sump if your socks overflow. The Red Flex is equipped with a dosing, probe and wire holders,