FoxiiiC

I will be going on a vacation for 8 days, and currently have 4 male guppies in a planted tank. Would my best option be to get a timer that turns my light on and off, and should I also get a feeder for them? Unfortunately I do not have anyone who can feed them for me and I worry that the feeder will cause issues, so if anyone has any recommendations on ones they know to work, that would be great.