Hi, I want to buy a fish feeder for feeding my fish when I go away this 
summer for one month. I need it to be able to feed flake and hikari sinking 
carnivore pellets, once a day. I also need it to be reliable, as it probably 
won't be checked more than twice in that time, but I also don't want to have 
to buy an air pump for it. So opinions on which one will be the best choice 
would be appreciated.

thanks
Feral Boy