Add more Root Seekers to your system. Since the Reservoirs can be moved easily from from location to location, you don't need one for every Root Seeker.
Example 25 tree application: Purchase 5 Base Systems and 20 Root Seekers. Install 25 Root Seekers and shuffle 5 Reservoirs between them. While you can't finish as quickly, you can save money! With Tree I.V. you can do whatever you want.
Not drip irrigation: Please don't expect the Reservoir to remain full for extended periods of time. Slow drip irrigation promotes concentrated root development at the drip point, keeping the tree weak and dependent. If you want slow drip irrigation do not purchase Tree I.V.
Very durable: Unlike bag products, Tree I.V. cannot 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.