speaking of which, the lack of colours its starting to piss me off now. everything "bad" (phosphates, nitrates etc) tests as zero even at triple tests (granted, the salifert test kits still dont go low enough so still likely to be nutrients of some sort) i am figuring its the sand bed and so am considering going BB for a while to see if it helps. my gut instinct says sand bed (specifically from the fuge) but disturbing that means upsetting the critters living in the sand. the substrate is only 1" high in there. the tank only has 3 x 150W halides so more lighting would certainly help but i dont think that is the show stopper. lastly i realise the low figures i had for my water chemistry parameters (low ca, kh and mg) certainly would not help either. i did notice my acro's showing great signs of colouring until around the time the calcium reactor packed up on me and all these figures took a rapid decline. so i think the ups and downs in water chemistry have a big part to play as well as nutrients. i have seen other tanks with great colours and lesser lighting than mine (cookies!) i have everything required to provide low nutrients (good skimmer, zeovit, rowaphos, regular water changes) yet inadequate colours.
any further suggestions to the above? im all ears