Quick update
Since the adding filters, timers, decent co2 I've been hoovering out the dead bits from the monte carlo and whats left seems to be getting greener, fingers crossed it will bounce back and start to fill in.
I was going to run this low tech after the transition but I've changed my mind, now i'm thinking high tech. Dans given me some glosso, which I'm going to put in front of the wood and possibly some pogostemon erectus behind the crypts and some proserpinaca palustris "cuba" behind that. What do you guys think?