Finally sorted plumbing, up & runing used all media & water from existing tank.. 75mm deep section of trickle filter at top of sump, 10kg of coral peices, plenty of room for more will add some macropore, marine pure balls etc.. put a ball valve on return line. Trying the no substrate tank this time small blue stone stacks but try keep it looking open.. few things too finish off but preety happy so far