cut your own filter material, blue and white, question...
This is embarrassing, and I bet there will be some eye rolls out there, but I give up. I frequently see "cut your own" filter material at fish stores with one blue side and one white side. Sometimes it comes in prepackaged lengths, and I have also seen it on a large roll...sold by the foot.
Which side is the finer side, the white or the blue? I want to put it in a filter with the coarser side getting the water flow first, but which color is that? I have examined it closely, and shown it to others. Guesses go both ways!
Let the laughing commence...