After being advised by a well known marine shop that a wet dry sump filter is the old way of doing things I have now replumbed my entire tank with my skimmer being in line from the overflow to the sump and then I have replaced the sump with a refugium. In the refugium at the moment I have two T5 lights, coral gravel and 6 kg of live rock. With all the changes and moving rock around etc my tank has become a little off colour. How will this sort its self out bearing in mind that I no longer have a filter as such. My tank is 500l and my sump about 150l. My water seems to have a bit of a yellow colour with small white particles in suspention. The tank has been running for 2 day and it is not clearing very well. Before the change the water was crystal clear. I still have no fish or coral although the tank has been running for 6 weeks now.