I'm trying to figure out the best way to change out my sand in my tank. The sand I have in there is more like large pieces of crushed coral. There are even whole small shells in there. Because of this I can't add fish like wrasses that burrow or sifting gobies. I have new finer sand that I want to swap the old stuff with but wasn't sure how. I guess the problem isn't really getting the old stuff out (I can just siphon it out) but getting the new stuff in without making a huge mess and upsetting my fish and corals. I can take out some stuff but not much. The sand I'm adding is the Caribsea Arag Alive Fiji Pink (link below for more info).
Any suggestions?
http://www.marinedepot.com/ps_viewit...FQqEfgodpx4ALg