Review on Zelerdo Aquarium Feeding Floating Suction Fish & Aquatic Pets : Automatic Feeders by Dawn Edwards

I bought this to keep the frogbit floating plant out of certain spots as it spreads very quickly and completely covers the water. I used it partly for feeding and partly not to block the light from the plants below. This will keep the plants out of the area for a few days at most, but eventually you'll have to collect them all to clean them (if you have flow in your tank), it will stay clean a little longer, around a week or two... if it is a low consumption tank. However, if it's just used for feeding to keep the food in one place, it works amazing. I have been using them for a few months but unfortunately they are now gathering dust in the cupboard and I had to remove all my frog bits because the plants below were dying from lack of light.