hi, we have just bought a small set up and was told to fill tank with tap water, it has been running a week and we have just bought seven peices of live rock, the day after putting rock in tank we have seen things moving about on it, the thing is we went to another shop to day and he told us we should have used ro water to fill tank, and siad we could lose all the live rock, he said we need to do big water changes to get ride of the tap water, is this true, thanks. |