Well two questionsjetajockey said:just use a prefilter sponge and it's not really an issue. Sand can get a buildup of nitrogen and other gases in it from the breakdown of waste so it needs to be stirred up from time to time to keep this from happening OR put some MTS in there, they do a great job.
Malaysian Trumpet Snails are great at doing that for youAlee C. said:One saturday I just clean the sand and the next I stir it all up. It said on the interent to stir the sand every 3-4weeks, as gasses get trapped underneath.
Yes, thank youxfunkman262 said:Malaysian Trumpet Snails are great at doing that for you