I don’t think it is this, and here is why. The plants didn’t spread out like duckweed, they are thick, and 1 inch thick with roots that tangle up in each other.
First of all, it is not acrylic. It’s glass. There is usually around 5-6 hours of sunlight. 2 hours of direct sunlight. But hair algae is coming nonetheless. I have Flagfish in another pond, and they have really kept the hair algae low, though I haven’t seen them actually eat it since it is a patio pond. I love the look from the side. They look like the gymnos! I love how they pick up the sand, and swim over to another one and spit it in his face ???
