First that is not the Recipe for BML -
It is a modified recipe for HPW.
I would make the recipe WITHOUT adding the Green juice. That primarily adds additional sugar to a mixture that is already very sweet and dilutes the protein and vitamin content of each serving.
It usually takes gliders a few days to get used to a new diet and eat it well. With the additional sugar content of the mixture your gliders may not have much appetite for the fruits and vegetables you are offering.
I would not add apple juice to their water. They are probably getting all the water they need from the HPW mixture and the fruits and vegetables you offer. Gliders do not drink very much water when they are eating their diet well.
If you do put apple juice in the water bottle it must be rinsed thoroughly and refilled after no more than 8 hours because the apple juice will begin to spoil if left at room temperature much longer than that.
You can offer a small amount of the green juice or apple juice in a separate dish (no more than 1 teaspoon per glider or you will just further decrease their appetite for the foods you DO want them to eat.
Gliders have very small stomachs about the size of the tip of your thumb. They can only eat small amounts at one time but eat several times during the night. If they fill up on juice, they will not have room for HPW, fruit and vegetables.