My 38 is half filled with a solid mass of it, so I need to thin some out. Grown under standard 4' shop lights in a BN growout tank, it's thick and healthy. Stuffed ziploc bags, $3/quart or $8/gallon, Priority Mail shipping w/72 hour heat pack is another $8. Likely to include tiny duckweed (Lemma minor) and ramshorn snails eggs.