ComboPacks are the ideal solution for lake managers or for the home owner looking to beautify and clarify their ponds without resorting to toxic chemicals or copperalgaecides. ComboPacks combine a concentrated (1) 1-gallon jug of our liquid Nitrifier formula and one large EcoSock.
 
Bio-Zyme Combo Pack Box  includes: 1 EcoSocks and 1 gallon of Nitrifier, shipping included.