Monitor the System
When the system is in place, regularly monitor the tubing, particularly if it's fastened to brick or another rough surface. Constant vibration against a rough surface will eventually wear the tubing thin. Replacement tubing can be purchased from the manufacturer or at a plumbing-supply store.
The next item on the checklist is the filter at the back of the pump. Most manufacturers will include several filters with the initial purchase and usually sell individual filters. A filter works overtime filtering sediment, which will clog nozzles, from the water supply. Some filters are equipped with phosphate crystals, which attach to sediment that seeps through and out the nozzle.
Check the filter every month: simply unscrew the bottom half, remove and inspect the filter. Wash the filter if it needs cleaning, or simply practice good maintenance and change the filter every month.