Cut back on your feeding. I mean way back. Maybe stop all together, not sure what fish you got. Add some snails or a tang and be patient. A tang wont stave to death in a tank full of algae. Algae is your friend. If you didn't have active nutrient transport it wouldn't be growing. It grows fast, cycles lots of nutrients. Takes around four months to cycle algae out of dirty tank. Up to a year if its real bad or "crashed".
Two clowns, a wrasse, and a goby. I'll cut back a bit - I feed once a day currently. Will skip maybe one day a week.
I'm gonna do some more frequent water changes and up the cuc and see what happens.