Originally Posted by PzReefer (Post 326096)

I agree also that the magnesium levels are likely your cause of lower calcium levels. If you use a magnesium supplement like kents or seachem you could raise the Mg levels by about 50 ppm every couple of days over a week or so, to about 1400-1450 ppm then target your Ca at your desired level with a Ca supplement at about an increase of 15 ppm per couple of days after that.

My levels are as follows 1450 ppm Mg 440 Ca and Alk is 9.2 dKH.

I use a Calcium reactor with reef bones and Zeomag with an effluent drip rate of 80 ml/min and ph of 6.6 I have not added any other supplement for these three for over three months just check drip rates and monitor alk. check CA and MG once a month.

Pz

Originally Posted by bv_reefer (Post 326084)

as for you're calcium level of 500, that seems overkill, what test kit are you using? let it slowly drop down thru precipitation

Originally Posted by bv_reefer (Post 326060)

calcium is now 380 and magnesium under 1100 last time i checked

Originally Posted by marie (Post 326093)

One has to remember that coraline is an algae and requires the same conditions to grow that any other algae needs...nutrients and light. It just happens to be more desirable then any other algae and is therefore a good way to soak up nutrients in a tank.



And corraline not liking bright light is just a myth. It won't be the nice dark purples and reds but the pink stuff grows like gangbusters only 6" under a 250w 10K DE MH


http://img.photobucket.com/albums/v2...ralline002.jpg


and just in case there are people out there that don't know it yet...I HATE coraline algae

Originally Posted by 'Ol Nobodaddy (Post 326132)

sigh..

Originally Posted by Myka (Post 326119)

Is that all you test for? You don't test pH, Ammonia, Nitrite, Nitrate, Phosphate, Alkalinity, etc?

Your magnesium should be around 1350. Think of Mg as the fulcrum on a teeter totter. You can't keep alkalinity and calcium up if your magnesium is very low. In your case, it is very low. Try to aim for Calcium 400-430, Alk 8-10, Mg 1350-1400. pH should be 8.0-8.4, and Am, nitrite, nitrate, and phos all 0. Not close to zero, but AT zero. :)

Originally Posted by marie (Post 326138)

Not sure why you feel a need to sigh, I wasn't trying to step on anyones toes. I was just pointing out to bv_reefer that maybe excess nutrients is the reason why he is getting better coraline growth then mik_101, not because he is using purple up.

And I really do find coraline to be as invasive as some of the "pest algaes" out there. I also realize i need to manage the nutrient levels in my tank better :mrgreen:

Originally Posted by Oscar (Post 326139)

I am testing for all of these too. As some others have reported there was a batch of Kent that had some weird parameters. Calcium is continuously high, while Mg is low. So I have recently been dosing to get the Mg up.

My Alk has been too low. So before dosing for alk I think I am going to hold off on the purple for a few weeks to see what happens.

Originally Posted by Myka (Post 326119)

Is that all you test for? You don't test pH, Ammonia, Nitrite, Nitrate, Phosphate, Alkalinity, etc?

Your magnesium should be around 1350. Think of Mg as the fulcrum on a teeter totter. You can't keep alkalinity and calcium up if your magnesium is very low. In your case, it is very low. Try to aim for Calcium 400-430, Alk 8-10, Mg 1350-1400. pH should be 8.0-8.4, and Am, nitrite, nitrate, and phos all 0. Not close to zero, but AT zero. :)