A friend dropped a whole automatic feeder full of pellets into my 6 mo old 300 gal tank. Tank has just 7 green chromis, live rick, one emerald crab, one brittle star, snails and hermit crabs. Protein skimmer getting a lot of skimmate. Ammonia, nitrites, nitrates did not spike, but everything now covered in algae. Some of the rocks have the "furry" algae. Pictured below. What should I do?

