can substrate cleaning cause issues???

Last water change, I decided to clean off some snail poop and other little flaws from my substrate and also moved around a couple of my rocks. I disturbed substrate quiet a bit. Next day: diatom dusting, following day: tiny bubbles all over live rock, following day: green algea on rock. By now: diatom is pretty yucky. I added another HOB filter to pull what I can.

I checked and rechecked all the perimeters - everything came back the good, including phosphate (? weird) I am really puzzled.



question: will cleaning/disturbing the substrate always cause this?