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The 4 Pot XL System is extremely versatile and can be used for a wide range of plant types and sizes
The Enhancer is an all natural CO2 generator made from 100% organic ingredients
Optimal ratios of potassium to silica decreases risk of contamination
mined potassium sulphate
Meets NSF61 standards
Bluelab 4.0 pH Calibration Solution soil The 4 Pot XL SystemPH measuring equipment must be cleaned and calibrated regularly to ensure they are giving the user accurate readings. pH instruments are calibrated to pH 7. 0 first (buffer) then to pH 4. 0 (slope). Calibration Solutions should be stored in a cool place out of direct sun and heat. They should be stored with the lids securely tightened.
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