Thanks for the reply. I certainly won’t try the dried shrimp. I am a little worried about the use of live shrimp though because there is already a large population of shrimp (several hundred for sure) living in that tank because I use local inter-tidal mud to help establish my salt water systems and the shrimp come with the mud. The seahorses hunt these shrimp continuously but since there are lots of spots for the shrimp to hide, I’m not sure that the seahorse get enough of them each day. I also have three other fish in the tank (it’s 55 gallons) so I feed frozen mysis which the sea horses eagerly participate in. The refugium for my other reef tank is 30 gallons and has very large shrimp populations with less places to hide. What if I place the sea horses in there while I’m away? I’m fundamentally mistrustful of having a friend take care of my tanks because I’ve had some well meaning disasters from that. My other option would be to engineer up a automatic frozen shrimp feeder which is interesting from a DIY point of view but not without risk of course.