I find that the most effective drip systems are also the cheapest! I am currently using a used IV drip bag that i got at work. As long as the bag says "Lactated Ringers" (LRS) then you are in great shape! These bags usually come with a turn wheel, which allows you to regulate the drip from a steady stream to 1 drip per minute! I have used this for my Veiled and i find it to be excellent! The overall volume of these bags is 1 leter (1,000 ml) so it is a great way to measure the overall amount of water that is being offered. If you have access to a clean catheter tip, you will find that they fit perfectly between the mesh of your cage. This is my favorite drip system, period!