Emerald Harvest pH Down 1 qt case of 12 ventilation What's included:

What's included:

this filter is built to perform where it matters most

Perlite and Dolomite Limestone (pH adjuster)

naturally-no respirators

The oven shelves are made of aluminum and we recommend covering the shelves with silicone pads or a PTFE sheet that can be cut to size

Emerald Harvest pH Down 1 qt case of 12 ventilation What's included:Description Product Details Emerald Harvest pH Down pH up and pH down: Keep the nutrient solution and the growing medium in the "sweet spot" (pH 5. 56. 5) for optimal nutrient uptake and no nutrient deficiencies. pH Up and Down are buffers composed of a weak base (Up) and weak acid (Down) designed to correct pH imbalances. pH Up and pH Down adjust the pH for optimal nutrient uptake and stable beneficial bacteria colonies, and they forestall nutrient