I think Aquatic Environmental Services used to sell them but quit due to reliability problems. Their website is http://lakework.com/

Unfortunately, if they can't help then I don't know what to tell ya.

I've heard of people retrofitting Texas Hunter timers to their feeders, but I don't know if it'd work with your sliding door, nor do I know how to retrofit them.

www.hoosierpondpros.com


http://www.pondboss.com/subscribe.asp?c=4
3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).