Hey I have heard dissention on the issue of cleaning sand beds. 99% of the time I hear not to disturb or purge your DSB. I was under the impression that cleaning the sand (be it replacing or siphoning detrius out) would damage the eco system in the DSB. I have heard of people siphoning their DSB to remove this stuff manually and distrubing the sand and life within it. What is everyone's thoughts? I know a python works well back when I had an UGF and gravel, but sand is a little harder to clean.