We used this when we went away for five days. We have a freshwater 20 gal. tank with assorted tropical fish. They were all fine when we returned from vacation.

Pros: No dead fish

Cons: none

We use these when we go on vacation. We make sure before we leaveto give extra food to the fish and they drop one of these in the tank. It works well but can leave the tank a little cloudy.

Pros: Provides adequate nutrition

Cons: can leave tank cloudy

I actually tried these out a couple of weeks before I went on vacation, just to observe how they work first hand. The pyramid is recommended for a 10-20 gallon tank with 20 or so fish. I have a 75 gallon with about 45+ fish, so I bought 3 of these pyramids. The whole entire pyramids were gone in 3 days, they did not last nearly as long as they should have. Granted, I have a lot of bottom dweller fish who were attached to the pyramids constantly. My snails, pleco, rainbow shark, chinese algae eater and cory cats couldn't leave these alone! Also, the food that comes out and floats to the top are huge pieces! My smaller fish like the serpae tetras and female bettas weren't able to eat the food that floated out of the pyramid. I guess these are better than nothing though. They didn't cloud the water at all. I did end up putting 3 more in while I went on vacation, but still had to have my pet sitter feed the tank every couple of days to ensure that everyone got enough grub.

Pros: easy to use, find in stores, didn't cloud the water

Cons: not sure how great it works

We have left our fish for a week with this and they were all fine. Leaves you peace of mind while yu are away.

Pros: fish lived

Cons: no

We used this when we went out of state for a week- i never actually thought these automatic day feeders would ever work. But the fish were fine when we got home, and we've been using them for vacations ever since!

Pros: Feeds all of the fish!

Cons: nothing