Hi there,im new to the hobby now and is bussy setting up my dsb,I bought some aragonite from a lfs but the grain size is about 1.2mm in diameter,can anyone give advice on that,is there any special maintenace or problems I should be on the lookout in my dsb,would crushed coral work in a dsb with a grain size of 5 mm in diameter,here is also a photo of my sump so any advice on it would also be appreciated