This is a simple seahorse hitching post feeder for feeding frozen food to your seahorses.Attach this Thing to 1" schedule 40 PVC using a 1" coupling and sink it in your seahorse tank. To feed your horses, thaw frozen mysis or your preferred seahorse food and pour it down the PVC tube. The thawed mysis will sink to the bottom of the feeding tray and your horses can attach to one of the eight hitching posts and feast away.This design is based in part on http://www.aquariumtechnik.at/SPA1000DE.html