Ca and Alk usage
 

Is it possible for my SPS tank to go through this many minerals in 2 days ???

All I have are small frags ...

7.5 to 6.5 and 430 to 380 in 2 days ???

C'mon, I hardly have any frags and a small amount of LR ...

http://i749.photobucket.com/albums/x...d/DSC01559.jpg

What's your Mag at Greg? I found that if your magnesium is low your Ca & Alk will drop fast. The close your mag stays at 1400 it will help with the rest.

Thanks Greg for the help

Funny you stated 1400 ...

I just re-tested my Mag ..
It's @ 1400

Tested twice with Elos

+1 Check you Mg, it's always the first to check if the other 2 are weird. It's what determines how much of the other 2 stays in line.

Du'oh! Beat me to it. Coraline will consume it too....

So now what ???

Is my usage out of whack ??

I think it is

I would say that your coral & coralline is just absorbing this much & you just need to up what your dosing. What's your coral growth like? Noticeable changes?

Greg, are you dosing and how much were you dosing before and now? Have you changed salt? Are you adding DIY Ca and Alk and are you manually dosing or using a doser? These may also affect your levels if there are inconsistencies etc...

As your tank matures and the frags start to take off you will have to adjust your dosing amounts accordingly. My two football size clams can drop drop the CA in my 165g 30ppm a day! Thank god for calcium reactors! :)

Decent changes, but I thought not enough to warrant this kind of usage
I mean, come on, it's only a 75g with new frags ...
I'm monitoring and dosing as the days go by, and this is why I started this post
I haven't changed salt and I am dosing with some Seachem stuff to keep up
I'm shocked how much I'm using
Last week I used enough to dose 1 TBSP of Alk and 2 TBSP of Ca just to keep up
All my frags are still little critters, so I don't get it :surprise: