Humboldt Sea Cal 2-0-0 -- 2.5 Gallon Nutrient Accessories This premium formula offers a

This premium formula offers a traditional PK (phosphorus and potassium) spike

This 3/16 in ID by 1/4 in OD line is flexible

Four-layer ducting resists tears with steel-wire shape retention and a flame-resistant aluminum inner layer

Keep an eye on the moisture in the cubes

Humboldt Sea Cal 2-0-0 -- 2.5 Gallon Nutrient Accessories This premium formula offers aSea Cal is a highly concentrated growth enhancer and chelated calcium supplement that offers vital macro and micro nutrients in specific ratios during early plant development. Calcium is very important during a plant's vegetative cycle, controlling aspects of cell wall structure and permeability. Calcium is absorbed into a plant through the root tips, but plants are not always able to completely satisfy their need for calcium through their roots. This