Have millions of trumpet snails in my tropheus tank, which contains 12 tropheus moori and a 220L tank. Just wanting to find out about treating with copper to get rid of the snails and if anyone has had any bad reactions with their tropheus and copper. If copper is not recommended then i'll take half the sand out and treat that with copper, wash and soak for a week or so, then swap sand over with other half and do the same again. But then have the problem with snails still in the tank or in the filter so what to do????