I know the port is still WIP and a lot is unplanned, but I wasn't sure if this one slipped between the cracks, so just in case!

Botania still adds Prismarine, even though it's a vanilla item now. Not a big deal, except the alchemy catalyst converts Quartz to Vanilla Prismarine, and Botania does not use Vanilla Prismarine in any of its recipes.

Easy fix for the most part, but I also wanted to ask - does Botania plan to remove the (now redundant) 1.8 blocks at some point? You've got bigger fish to fry, but I'm curious :P

All recipes should use vanilla prismarine. Which ones do not?

All of them. I'm on the latest release, by the way :)