18x24x4 (3 5/8) Pleated MERV 15 Air Filters 2 Pack Liquid & Weight Measuring Can be used safely within

Can be used safely within a week until harvest

Manual off and on action

Platinium HydroStone can be utilized for growing in both rockwool cubes and square pots

When you dissolve Commercial Bloom into your water

This device features an easy-to-use up and down arrow function and a digital display displaying the intensity percentage

18x24x4 (3 5/8) Pleated MERV 15 Air Filters 2 Pack Liquid & Weight Measuring Can be used safely withinNordic Pure 18x24x4 Pleated Air Filters MERV 15 are made of electrostatically charged synthetic materials that attract and capture most airborne particulates in your home. Each time air passes through a Nordic Pure pleated furnace filter, lint, household dust, pollen, dust mites, pet dander, smoke particles, smog, allergens, virus carriers, bacteria, mold spores and other contaminants are removed. All Nordic Pure pleated air filters are manufactured