[philman_36]

https://www.ketv.com/article/lincoln-memorial-reflecting-pool-algae-photos/71616659What you are seeing is residual algae from the supply lines, which have been sitting dormant for eight weeks while construction has been taking place. It’s part of the normal startup process. We are removing the algae, and the nanobubblers will maintain the pool and keep it algae free,” communications director Kate Martin (Interior Department) said in a statement. What a visual image and representation of DC politics and politicians.
The supply lines need to be flushed!

[yesthatjallen]

To me it looks like incompetence (or sabotage) . Surely the park service knows how to deal with this algae problem.