I need to drop some blue board with lettuce in it in my AP tank. I'm hoping it'll provide some added shade for the fish and grow some yummy salad goodies at the same time.
I've been looking at media as well and have settled on -3/4 black lava rock primarily due to price, weight and availability. The clay hydrotons are way more expensive than I can afford right now. I'd looked into heat-expanded-shale also and the closest place that has it is still several hours...