do not get the solid "weekend" or "2-week" feeders, they will do more to pollute your tank than feed your fish. The best option, as already stated, is to aliquot out food portions for each day you are gone. If you are only going to be gone for a weekend, you could just not feed them. I finally broke down and ordered an automatic feeder called the "daily double II". It was only $24.00 and seems to work nicely. but I installed it a week before I went away to make sure it worked and that I had it adjusted to feed the correct amount of food. email me if you want to know where I got it.
leslie_r_pustilnik@groton.pfizer.com