Bluelab® pH 4.0 Calibration Solution Size:Solution 500 ml with 2 parts for the

with 2 parts for the vegetative stage and 2 parts for the flowering stage

and secondary nutrient conditions your plants for robust growth

it’s no secret that adding beneficial microbes to your root zone is equivalent to recruiting nature’s invisible army to live symbiotically with your plants

Increase the growing area under each lamp by up to 75%

It’s designed to be the true 1:1 replacement for the fixture that helped revolutionize the industry nearly three decades ago

Bluelab® pH 4.0 Calibration Solution Size:Solution 500 ml with 2 parts for theBluelab pH 4. 0 Calibration Solution "pH 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 Solution should be stored in a cool place out of direct sun and heat. They should be stored with the lids securely tightened."