Dkh & Cal

[surferjoe86]

hey,
my calcium is at 500ppm and my Dkh is at 9.9
I know that cal and dkh are links, I dont fully understand it even after reading up on it. It went streight over my head!
looking at this chart at the web page below...

www.google.co.uk/imgres?um=1&hl=en&safe=off&client=firefox-a&sa=N&rls=org.mozilla:en-GB:official&tbm=isch&tbnid=odVEYFORDty5-M:&imgrefurl=http://saltwater.aquaticcommunity.com/2012/ph-in-marine-aquariums/&docid=cUW8fCtHijZtSM&imgurl=http://i938.photobucket.com/albums/ad226/Cliff_Erhardt/To%252520Post/balanceddKHandCal.png&w=1022&h=472&ei=tBzOT5vREczJ8gOg4rHoDA&zoom=1&iact=rc&dur=477&sig=106497264964618442644&page=1&tbnh=95&tbnw=206&start=0&ndsp=21&ved=1t:429,r:1,s:0,i:73&tx=102&ty=53&biw=1525&bih=700

my Dkh and Cal dont match up. Should I raise Dkh to match the Cal or lower my cal?
My MAG level is at 1260ppm
or is everyting okay as it is?

I've been struggling with lack of coraline algea growth. But also want the best for my corals
any advice would be great.

Joe

[davem]

lower your calcium to 430-450 and increase your mag to 1350ppm. everything else should then follow suite once they are balanced. in terms of dkh you can have a huge tolerance as long as your not having swings. I keep mine at about 8 but others prefer it higher.
with regards to your coraline growth a few obvious things are other unwanted algae s out competing the coraline, the amount of light, also phosphate's inhibit calcification so will slow down coraline growth so make sure you are running low levels, and finally. time. this stuff grows slowly no matter what you do so give it time.