DigdirtJen
Here Fishie Fishie Fishie! :)
I built myself a bog filter for my pond last weekend. There's about 3 inches of pea gravel in it. Yesterday I planted some creeping Jenny so of course i had to move the gravel around a bit to make a hole for the plant. When i moved the gravel to make the hole, i noticed there was a lot of green algae (i guess it's algae) that started to stir. The gravel isn't green...it's like this stuff was loose, but only in the gravel. Is this what it's supposed to do? Pic of my set up is attached.