Home watches the Grässlin Rondomatic 400, feeding your fish always punctual. Day by day, quite automatically. The security is round. Whether fresh water or salt water. The Rondomatic400 of Grässlin is super. The fodder, no matter what, whether flakes, tablets or mosquito larvae. Even medicine. Depending on demand. A maximum of 28 days. You can use the Rondomatic 400, 28 days once a day to feed, which means four weeks holiday-carefree! In two Feedings daily halved the time accordingly. The programming is easy. With a Schaltreiter, in the Schaltring inserted, you solve the feeding process for each desired time.