After 4 years I finally had a custom acrylic seahorse dish made. I've been keeping my eyes open for one for all this time on various sites and finally asked Jack from Mr. Cob's Wet Acrylic. I got it Wed night and I love it!! Jack does the best acrylic work I've seen. I have a rubble box from him as well. I just wanted to share some pictures of it. The bowl I had been using all along worked fine, except I had to unplug all pumps to use it or all the mysis would just blow out. Also, the seahorses couldn't really hold on to the sides of the bowl and they'd just slide into it and that would push the mysis out. This dish allows me to keep all the pumps on and the horses have a hitch, and I don't lose any mysis. I haven't decided yet exactly where I want to place it.
In the pics you can see how first I put the tube in the bowl, then put the chunk of frozen mysis in the tube to melt and sink. When all the mysis is in the bowl I can slowly pull the tube out and here come the seahorses to feast!