I spent all day yesterday clearing the aging crushed coral substrate and replaced it with sand. It looks so much better and I think the wrasses all appreciate burrowing in a softer bed.
MP60 wetside....first time I have cleaned it with vinegar in 2 years. Usually I just rinse under water with a toothbrush, but the Coraline Algae is just way to encrusted and it's been a bit noisy recently.