Joe, you should definitely try uaupes in your bdbs tank/s. I have some articles on syn and on a micro propagation article it stated higher survival rates in a certain species in sand over vs some nutrient mediums and soils. This was a tc article. But heck they come from sand in the wild and uve already grown belem, giants, and so on right? I dont see how uaupes is different as long water kept soft and acidic.