This Hydroponics PH Down from Growth Technology is an 81% solution of Phosphoric acid and it is used to lower the PH value of a solution.
PH down is an aggressive liquid that should be handled with great care. When not in use it should be stored in a locked cupboard and kept away from children.
How To Use
Add your nutrients and additives to your water first and then check the PH level of the solution.
To lower the PH value add Hydroponics PH Down in very small amounts to the solution and stir then check the PH level again.
Repeat this process until the desired PH level is reached.