How can I use RootĀ·Juiceā„¢? When AllĀ·MixĀ® or LightĀ·MixĀ® are used, the plant can best be fed with RootĀ·Juiceā„¢ during the first week(s). This is indeed the week where a good rooting is important. We recommend a dosage of 1 to 4 ml per litre water. RootĀ·Juiceā„¢ has to be used on earth, coconut and in hydro- or aeroponic systems. When using in hydro systems, RootĀ·Juiceā„¢ guarantees the protection of the roots.