Okay, awesome! thank you for the advice. So, this may be a silly question (I guess I'm trying to understand the logistics behind it) but how do I make it so that the waterfall water is also being filtered by the bog? I think I'm assuming the waterfalls will be in the exterior of the pond... but now that I'm writing this, I think I've got it backwards and the waterfalls should be created within the pond...using the same water, right?