Many marine fish feed on a continual basis on the reef. Small species of coral fish, including the anemonefish, target plankton throughout the day. Other species, such as seahorses and pipefish, require living food, as their feeding response is not triggered by frozen or flake food. In all of these instances, presenting living brine shrimp as a food source is an ideal solution to the feeding problem. Fortunately, by making an automatic feeder, you can ensure that live food is supplied to the aquarium fish on an ongoing basis.
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Things you need
- 1-pint plastic bottle, including bottle top
- Cordless drill and bit
- Two pieces of 2-inch rigid 0.9-inch diameter pipe
- Small tube of non-toxic, 100 per cent silicone sealer
- 3-foot-long piece of air line tubing
- Wall mounted bracket to hold a 1-pint bottle
- Small volume of aquarium water
- Live brine shrimp
- Vibrator air pump
- Electrical timer
Remove the screw top of a 1-pint plastic bottle and drill two 0.9-inch diameter holes next to each other, in the top.
Push a 2-inch piece of rigid 0.9-inch diameter pipe into the first hole.
Squeeze a pea-sized amount of non-toxic, 100 per cent silicone sealer around the entry hole and using a finger, smooth the silicone out to form a watertight seal.
Repeat the process with the second 2-inch piece of rigid 0.9-inch diameter pipe. Push this piece of pipe into the second hole and seal it in place.
Allow the silicone to cure for 24 hours.
Push the end of a 2-foot-long piece of air line tubing over the end of one of the 2-inch-long pieces of rigid 0.9-inch diameter pipe. Place the free end of this tubing into the main aquarium.
Push the end of a 1-foot-long piece of air line tubing over the end of one of the second 2-inch-long pieces of rigid 0.9-inch diameter pipe. Push the free end of this tubing onto the exhaust nozzle of a vibrator air pump.
Plug the vibrator air pump into an electrical timer. Plug the timer into a wall power source. Do not turn on yet.
Half fill the 1-pint bottle with aquarium water.
Add a supply of living brine shrimp to the bottle. Screw the bottle into the top. Ensure that the top is fitting tightly.
Invert the 1-pint bottle and place it in a wall-mounted bracket, just above the aquarium.
Set the electrical timer to run for 10 minutes each hour, from 07:00 to 19:00.
Turn on the wall power supply. Air from the vibrator air pump will slowly fill the bottle and displace or push out water and brine shrimp throughout the day.
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