I know many who give their gliders Glideraide, but really, it isnt a necessity for them. I dont give it to mine.
To get them to drink a little more water, fill their water bottles with that great bottled water and put a tablespoon or two of unsweetened applejuice in it. They love apple juice and it will get them to drink. You will lessen the amount of apple juice everyday until they are drinking plain water. And you will need to change and wash the water bottles daily while adding the juice.
Are you giving them any vitamin supplements? If not, you might want to consider getting some High Protein Wombaroo powder to sprinkle on their food every night.
Thank you for the wonderful compliment. I hope this helps.