We will sell this macro in billiard ball sized portions.  Ulva can be found in large sheets, or growing like a crumpled up piece of paper.  Sea lettuce can be placed in a sump as a nutrient exporter or in your main tanks as a treat for fish.  Ulva can also be placed in a main tank for beauty.  Be careful, it is tasty to any fish. In the sump,  it is great for growing your pod supply.  Pods congregate in it like a letter in an envelope.  Due to your mission, you are welcome to inquire as to what state we are finding:  sheets or crumpled.  Those crumpled green pieces are especially beautiful.