Add more Root Seekers to your system. Since the Buckets can be moved easily from from location to location, you don't necessarily need one for every Root Seeker. Maybe you added more trees, maybe you would like to add a few more watering locations to some larger trees, maybe you have 25 trees that you plan to water 5 per day. The possibilities are endless! With Tree I.V. you can do whatever you want.
Follow-up: It's fine to leave the system installed all year, but if you want to remove the Bucket when empty, pull it off and replace the Cap on the Root Seeker until next time. Buckets stack nicely in the corner of your garage.
Not drip irrigation: Slow drip irrigation is a bad idea. It promotes concentrated root development at the drip, keeping the tree weak and dependent. Believe it.
Very durable: Unlike bag products, Tree I.V. can't be destroyed with a string trimmer or a lawn mower. Find a new home for them when you're done.
Fine Print: Clay or compact soil has a much slower percolation rate, and may require an initial plunging with a 5/8" dowel rod to get water flowing. This is not a problem with new trees, but can be with larger, established trees. 2) Be sure the Root Seeker is installed with the shoulder tightly against the surface to avoid water resurfacing.