They are doing some work already! This is rock in the first picture, they’ve cleared two spots off of it! I tested nitrates at 25ppm via salifert and phosphate at 0.20ppm via Hannah. I started dosing vodka to start lowering them. With the clean up crew releasing organics I’m hoping to remove them as well! Started with 0.3ml dose per the dosing instructions I found online. Will see how it goes.