Google search for Elliott's DIY Feeder or Elliott's 900 gallon here on RC.
Elliot has a refrigerator he cut into and turned into an autofeeder for his 900 gallon tank.
In the upper frezer compartment of the refrigerator he used a pool timer and two Brute trash can lids, (bottom lid has one hole in it and is fixed in position. Top lid is mounted to dial on pool timer and is set to rotate at a predetermined interval. The top lid has 30 something holes in it, each topped off with a 1 inch PVC coupling. A block of frozen food goes into each coupling. When the top rotates, the hole with coupling will line up with the hole in the bottom lid allowing the food to drop through. A small 900 watt hair dryer is programmed to come on for 5 minutes to ensure the food heats up enough to fall through the holes.
A hole is cut from the freezer portion of the refrigerator through to the bottom fridge portion of the refrigerator. This hole is lined with 1.25 inch PVC and lines up perfectly with the holes from the pool timer and trash can lids.
Finally, two holes are cut in the bottom of the fridge portion and hard plumbed to the sump to allow for passive flow though the fridge compartment. The frozen food drops from the freezer, through the 1.25 inch pipe and hits the passive water plumbing in the fridge compartment. From there it goes to his sump and his return pump picks it up and broadcast feeds the tank.
I'm in the process of trying to build something similar but different. I dont want to plumb the fridge to my sump. I plan to have the frozen food drop into a container I will then fill with water from the tank using a Cole Parmer Peri-pump, and simultaneously pull the water food mix from the container using the same pump.
We'll see if it works like I want.
Perry,
Are you planning on having 16 lyretail anthias in your 120?
I am planning on adding 5 more soon. Depending on how well they do I may add more, so far all 5 are doing great
ETA - Link to Elliot's reef thread:
Elliott's Reef