Bluelab® pH 7.0 Calibration Solution (500 ml) Replacement Air Filters General uses includes growing tent

General uses includes growing tent and reservoir

They feature razor-sharp stainless steel blades

humic acid

which can cause stress and impair nutrient uptake

Be careful not to expose your seedlings & cuttings to direct sunlight or artificial light that is too strong

Bluelab® pH 7.0 Calibration Solution (500 ml) Replacement Air Filters General uses includes growing tentBluelab pH 7. 0 Calibration Solution (500 ml) a must in every grower's toolbox The Bluelab calibration and conductivity standard solutions are essential for use with all Bluelab products for the calibration of pH and testing the cleanliness of the Bluelab Conductivity Temperature probe. Bluelab solutions are manufactured specifically for Bluelab products and are referenced to high laboratory standards to ensure your Bluelab products last longer and