I have an aqualink system that was installed with the pool about 8 years ago. I'd like to add some capabilities to the system (waterfall, waterfill, landscape lighting, etc.). My current control head has only 5 buttons (pool, spa, and 3 aux), and the power center only has 4 relays.

Can I simply add an all-button control head and some additional relays in the power center? Or are other changes required?

While I'm on the same topic, I cannot seem to clear my programs on the aqualink. Even though I erase all programs, the various programs still seem to come on when I haven't programmed them to. The review programs doesn't display the "ghost" programs. Is there a way to completely erase the memory and start from scratch?