Water changes
Water changes are the key to success,in my oppinon.I change about 20 to 40 % a month depending on the nitrates.The thing is,i have found that weather it is my sps tank or my mixed tank[The 75]trying to maintain perfect water quality by not feeding enough is not the best path to sucsess.It is prety easy to have a tank with mushrooms,soft corals such as star polyps,sps such as accapora,montipora,to name a couple,and lps such as open brain,frog spawn,hammers,bubbles, and even flower pot and galaxia,if you pay close attention to placement,and feed regulary.How? you ask| Well to start a good skimmer,a refugium that is long enough to accomadate a decent sandbed and macro algae growth,a phosphate reactor to help with the excess phosphates that will be a result of appropiate feeding,plenty of circulation[in tank]and religously keeping up with water changes.As for placement.Keeping stoney corals near power heads or out puts and researching lighting needs for each,and soft corals mid tank seems to work for me.Corals such as Hammers and trumpets,galaxia and hammers should be fed by hand with power heads off at least 2 to 3 times a week.As for calicum and strotamine,and other trace elements that is up to the pearson and what kind of regimin they want to endure.I prefer to use the simple kalk drip method,and occasional strotmin suppliment on the about half of what the bottle says approach.The only thing left is water changes regulary,with quality ro/di water and salt from a trusted manufacturer.I use Kent,but there are other that are just as good or better.Keep up with macro harvesting,either in tank or sump,and carbon should be used in either a canister or reactor that doesn,t allow by pass about 3 to four days a month.This seems to work for me,and i never worry about weather im feeding to much or to little.[my fish sure don't seem to mind]and my corals look healthy and full.I'm sure there are things i didn't cover or might of overlooked like testing.That surely would take a few more lines than i feel like typing.Hope this answered a few of the Question's.