Nice!
Why are you doing a 90% water change? Anything over 50% risks shock in some pleco species. Anytime I have to do more than 50% I acclimate them like when new. Years ago I used to loose an occasional pleco after a >50% water change when I got back from vacation. I now have no problems with > 150 plecos with less than 50% water changes for any of my > 30 species.