I have a eheim automatic feeder, you can programme to feed up to 4 times a day if you wish, it also has a slider which determines the amount fed at each time, i have never had a problem using mine i would reccommend
Cheers Gordon
Thats great, Cheers for all the adviceYou will have no problem using it for a week even if you only half fill it, you can get a fair bit of food in them, by the way i got mine off ebay about half price to the shops and it was brand new in the box, so would be worth a look.
Cheers Gordon