Calcium demand question
 

First off a bit of background, I have a 175g that has been set up since march. Originally it was going to be lps dominant but I couldn't resist getting a regal angel that found lps corals very tasty, so now it is mostly sps corals (which the rotten fish has decided to pick at as well :twised: ).

The problem is, for the last 4 months I haven't been able to keep up with the calcium demand. I have a precision marine calcium reactor (the small one, good for up to 200g) that is now wide open (gravity fed with a 12ft drop) and I am dosing saturated limewater 24/7, as much to keep my ph above 8.0 as to add calcium. A week ago my cal/alk started to drop again.

I didn't really think my tank was fully stocked yet, how does everybody keep up with the calcium demand on tanks that are packed with sps corals?? It's really becoming annoying trying to keep up. Just when I think I have it stabilized, the cal starts to slowly drop again :sad: Should I be looking at a bigger calcium reactor? I just had this one hooked up in aug, I hate to have to tell my husband it's too small already

*edit* Sorry for babbling :redface: I felt a need to vent as well as ask questions :mrgreen:

And here's a picture for the visual people :mrgreen:
http://img.photobucket.com/albums/v2...jan1750027.jpg

Sounds like your reactor just isn't keeping up. Maybe it's too small or you could maybe not be moving enough CO2 through the reactor.

You know what the PH of the effulent is running at?

Never mind, I posted this same question on another board and happened to look at pictures of my tank, taken back in oct. There is some amazing growth happening. I see a bigger calcium reactor in my future :lol:
This picture was taken in oct
http://img.photobucket.com/albums/v2...2tanks0008.jpg

I have a ph monitor that is set to 6.6. The media is dropping about an inch a week at the moment

Tank looks great Marie. I'd check Mg as this could be the reason why your Ca isn't able to stay stable. Up your Mg, and your Ca should probably stay up there as well :)

this picture was taken nov. 26th
http://forum.marinedepot.com/Uploads...-8aed-cd86.JPG

and this is today
http://forum.marinedepot.com/Uploads...-ad75-97d1.JPG

My calcium reactor is 6 inches wide and 30 inches tall (I am making a bigger one!) That is all for my 250.

The best media to get is coral sand as I find I can run it to a low 6.2 resctor effluent ph and not have it turn to mush.

I am able to get 60 dkh out of the reactor! Some say you can get close to 80.

If that doesn't work then you need a bigger reactor, assuming that your chemistry is OK.

FWIW how are your magnesium levels?

As of last week my Mg was 1310 so I don't think that is the problem, looking at all the pictures I think I just need a bigger reactor. Anyone downgrading in the near future and want to trade :lol:

http://www.members.shaw.ca/bkotrla2/...5/IMG_6551.JPG





And I go bigger next week!:mrgreen: