Backyard Aquaponics
A place to discuss aquaponics

I placed coffee cans over the drain pipes, poked lots of holes in them for air and water movement. that keeps most junk from clogging the hose. i found that the key to having a siphon that works consistently is a large circular loop with the draining end open to the air and directly under the highest point in the loop.

I am also considering replacing the can with one of those mesh wire coffee filters, i think that would keep most all debris from returning to the fish tank. But in my cascading system would starve the plants in the second bed of their poop.