All of them were in with the SH, yep. The dwarfs were in heaven while I had them, all the plants were small enough to make great hitches for their small size. I've been babysitting some juvie erectus for the past two weeks and they loved the seagrasses for hitches. Shoal grass is a little thin for them, but they would just grab a couple of leaves instead of one. Turtlegrass they'd grab one. Halymenia they would play in since it moved in the current a bit. They were big fans of Caulerpa prolifera (which stays short though.. up to 6") for hunting grounds.
I've got a 130w of daylight 6700K PC's over the tank, a 20long. The typical seahorse tank, really tall, might require even more PC's or an MH spot to get the light all the way to the bottom. Which tank are you aiming for? The 65gal?
>Sarah