my LFS has flatworms in their chaeto atm and told me to check back once they got it under control. I finally decided on a spot on where to put the chaeto and should also fit the light im getting from you nicely. The way you have your chambers set up is pretty much how i'm gonna do it, so thanks for the inspiration!
Look for my letter in the mail with the badass x-men stamp on it, lol. The contents should buy you a few volcano tacos