Those are two Eheim 2080 Pro 3 filters. One has regular media, the other nothing but peat moss (which does not seem to be discoloring the water much anymore).
Sorry HD, not hiring just now. ;-)
Today's news: I sold the two P. scalare from the big tank. I have had them for years and watched them spawn dozens of times without any ultimate success (I made no effort) and found a guy locally who wanted to give them the chance they deserve. And since I want some more wild blood fish in there, away they went. A bittersweet moment to be sure - who likes saying goodbye to long term friends? - but one that will be best for them and for me I hope.
I will miss their sparring; she really went after him when ready. Here they are mugging for the camera earlier this year: