Came back from being out for a couple hours and found 4 large eggs - 1 on a leaf, 2 on the back wall, 1 on the filter box. They are white frosty looking, like a little snowball but they don't have any fungus. Is it OK to scrape them off and put them in a net box in the tank? I don't have a spare airstone or pump so I can't do what has been suggested to others and put them in a box with tank water and an airstone. I could also leave them and just see what happens of course.