Buy a Pleco Feeder
The Pleco Feeder - Made from 316 stainless steel and food grade silicone rubber to provide a lifetime of service. The Pleco Feeder comes in two sizes, 9⅞ in (25cm) and 15½ in (40cm).
The 9⅞ in (25cm) will work well in most 5, 10, 15, 20 long & high, and 30 gallon aquariums.
The 15½ in (40cm) will work in most 30 gallon and larger aquariums.
USA is $5 for 1 Pleco Feeder. $10 for up to 4 Pleco Feeders.
International Shipping (outside the USA) is a flat rate of $10.00 for 1 Pleco Feeder and an additional $10.00 for up to 4.