I just set up an african cichlid 50g tank. I have an AC110 on the tank for filtration. I put sand in the tank as my substrate. The problem I have is that my africans love to stir up the sand and it is ending up in my filter. I put a media filter bag over the intake tube to see if this will stop the sand from getting into the filter. The larger particles are now clinging to the media bag. Is this going to cause a problem with restricting my flow on the filter? I have to do something to keep the sand out but I don't want to cause problems with the proper flow rate either. Any suggestions?