EasyPro Concentrated Pond & Lake Dye, Water Soluble Packets Color:Blue The EPS4900VF model comes with

The EPS4900VF model comes with a variable flow control option to adjust the flow with an external control module

Easy to install — just two tethers or anchor ropes with weights (not included)

and other components within the landscape

RealRock™ Boulders are ideal for concealing air pumps

Dusk to dawn sensor included on all models

EasyPro Concentrated Pond & Lake Dye, Water Soluble Packets Color:Blue The EPS4900VF model comes withEasyPro Lake Dye Packets are a safe, convenient part of overall maintenance for a pond or lake. This nontoxic pond tint improves the appearance of pond water, helps with overall water quality, and reduces the amount of light below the water surface. Reducing the light below the water surface can lessen the growth of algae and weeds and can provide protection for fish from herons and predators. Each packet treats up to 1 3 acre (assuming 3' 4' depth)