OK I've been skimming through this forum because I am about to set up a 29g salt tank for my daughter. I willl not be running a protien skimmer but I have read that there is no filter media needed? Whatkind of filtration is needed besides water flow? Also can I take water out of my 300g freshwater to get the 29g started and just add salt. Also what is the temp I should be looking for and also salt content Thanks for any help