well when they get bad, let me know. I have an elaborate but sure cure! :eek2:
Catherine: Honestly tht is a question for a marine scientist. I hear a lot of conflicting views on this with some saying that corals need fish waste to survive, and others saying that fish waste increases nutrients in the system and will cause corals to decline.
The answer is probably somehwere in between, but since there is no lack of fish waste in our captive systems, I would lean towards trying to eliminate whatever waste we can, hence a variety of husbandry methods, not the least of which is strong skimming, and/or well balanced reefs that otherwise process the waste.
As far as coloration specifically is concerned, when I have such an issue I examine water quality/ORP, etc. and the amount of light the coral is getting. I just moved a couple corals tonight because their color was not what it should be. And because I keep a fairly clean system, this is where my attention is focused when trying to get the best coloration.
So I move the coral around until I find a good combo of light and flow. Usually this leaves behind some that has encrusted onto neighboring rocks, and often I end up with another colony that for some reason, does quite well in the original location.
Also please note that my mentor gave me some sage advice:
"Some corals will just not do well in your system, so rather than fixate on those, work with ones that will thrive in it."