Calcium level for best growth

[DesigDiver]

Where does everyone keep there calcium at to get the fastest growth?I keep mine at 400 and notice slow growth..should I kick it up a notch?

[mako199]

I have kept mine at 420ppm but when I upped it to 450ppm I noticed increase growth of both sps and coraline.

[Dave's Reef]

How about dkh? I'm running mine around 8.0 - 9.5 or so... trying to stay closer to Sea water values. I've run higher before but thought I'd try this out.

How bout you guys?

[Boyman]

Don't we have to factor in lighting conditions as well?

[Dave's Reef]

<a href=showthread.php?s=&postid=13810554#post13810554 target=_blank>Originally posted</a> by Dave's Reef
How about dkh? I'm running mine around 8.0 - 9.5 or so... trying to stay closer to Sea water values. I've run higher before but thought I'd try this out.

How bout you guys?

Make that between 8 or 9dkh, 9.5 being on the high side for me these days.

My original question stands....

[DesigDiver]

I've heard a lot that 450ppm gets the fastest growth...

[mako199]

My dkh runs 9-10

[60Cubed]

I would say it isn't as much the cal ppm# rather the over all stability of the system that gets the growth. Keep everything consistant and your system will thrive. My cal runs around 400ppm. Anything around 380-450ppm is perfect.

[dots]

DKh will vary with what methods you are using, a lot of the Zeo people are using around 7-8, when I first started people where keeping their dkh around 10-10.5. Find what works for you.

Ca......around 450 and less than it precipitates out. Make sure your Mg is up.

Stability is the big point here though.

[Todd March]

<a href=showthread.php?s=&postid=13813215#post13813215 target=_blank>Originally posted</a> by 60Cubed
I would say it isn't as much the cal ppm# rather the over all stability of the system that gets the growth. Keep everything consistant and your system will thrive. My cal runs around 400ppm. Anything around 380-450ppm is perfect.

+1, excellent advice from 60...!

[shelburn61]

As 60 said stability is most important, but you would probably be better off raising Alk and pH rather than Ca. As long as Ca is 360+, it is unlikely to be the limiting factor and will probably do more for precipation on pumps etc. than for coral growth.
http://www.advancedaquarist.com/issues/apr2002/chem.htm

[NanoReefWanabe]

<a href=showthread.php?s=&postid=13813350#post13813350 target=_blank>Originally posted</a> by dots
DKh will vary with what methods you are using, a lot of the Zeo people are using around 7-8, when I first started people where keeping their dkh around 10-10.5. Find what works for you.

Ca......around 450 and less than it precipitates out. Make sure your Mg is up.

Stability is the big point here though.

i thought CAL would only precip out if your mag was low or the ALK wasnt balanced with the CAL...

anyway i keep mine at 450ish and alk at 10-11 mag sitting around 1400...any higher and my monties burn up...

coraline is a PITA at that level of alk and CAL though, or so i find in my tank anyway...

[B.C.theReefer]

I try to keep my calcium at around 425(give or take 5ppm) and dkh at 9-10. This seems to keep all my corals happy and growing.