I would do a big water change with a good gravel vacuum to get a lot of debris out then and wait at least a week. If it is bacteria it won't hurt the fish but constant water changes can actually (from what I have read here) cause the bloom to extend, especially if there happens to be a food source in your tap water. Eventually the bacteria will reach an equilibrium with their environment the water should clear. If not then post again and hopefully someone else has some betetr suggestions.