Blooms that started last week in the St. Lucie River continue to spread, threatening Atlantic beaches expecting crowds of families for the holiday weekend. The algae is perceived as “horrible and disgusting.” and many reservations were canceled. Florida’s U.S. senators, Republican Marco Rubio and Democrat Bill Nelson, have joined Martin County commissioners in calling for the Army Corps of Engineers to stop the flow of water between the river and Lake Okeechobee. Environmental projects are needed. State water managers are working to direct more water south of Lake Okeechobee into the parched Everglades. Officials have prohibited homeowners from using fertilizer during the summer and begun working with the state to test waterways for pollution that might be linked to septic tanks.