I have both, chaeto and mangrove. i don't wipe leaves, but i do take the bad out. i don't know about the difference without them, but i do like them and don't mind either one of them, chaeto or mangrove. i keep mine in refugium. i've got tons of chaeto to a point that i have no more room for it, so i'm going to set up another refugium for my other tank. either way, nitrates are super high and there are tons of pods and other kritters hanging out in chaeto. get either or both, doesn't matter