Welcome to TFP!
I'm right over in Wayne, so good to see another NW Ohio resident. To answer your question, many algaecides foam up when used and dirt blowing on the pool can discolor the white foam. It will be best to net it off the top until it stops happening. In the future, regular algaecide additions are not typically needed as maintaining proper chlorine levels will keep water clear in nearly all cases. I haven't added any algaecide to my water in over 5 years.