Whats the best Ca, dKH and Mg for sps? - The Reef Tank

Go Back   The Reef Tank > The Reference Place > Water Chemistry Archive

Old 03-23-2004, 09:36 AM   #1
Little Fishy
pomme's Avatar
Join Date: Oct 2003
Location: Cornwall, England
Posts: 354
Images: 1
Whats the best Ca, dKH and Mg for sps?

Whats the best Ca, dKH and Mg for sps?

I have always heard and been told that you should keep your levels in this range:

Ca - 380 - 460ppm
dKH - 8 - 12
Mg - 1250 - 1600ppm

now these are a big difference between the two sides of the scale.

I was told that you should keep your dKH high as this will keep the pH change from day to night as minimal as possible. So with doing this you are also keeping your Ca and Mg in the upper scale (if using a ca reactor like me).

But i have heard of people 'burning' there acro colonies from having a stable high dKH.

But i know that we all want to acheive the Nsw levels as much as possible, which is:

Ca - 420
dKH - 8
Mg - 1400

But i was wondering what was best, whether to have a lower dKh (eg 8)and risk the pH fluctuation, or have a higher dKH (eg 12) and risk acro 'burning'?

Whats your thoughts?

pomme is offline  
Sponsored Links
Old 03-23-2004, 11:36 AM   #2
Midwest Zoanthid Farmer
nhlblues44's Avatar
Join Date: Jan 2004
Location: midwest
Posts: 51
Images: 38
I have heard that high alkalinity is good for the sps's coloration. I just started keeping sps's myself a couple months ago. The alkalinity is sky high in my sps system(not by choice just ended up that way after years as a fish only tank using ph buffer too much i guess. My ph is 8.3 solid day or night as my alkalinity is 16dk believe it or not. Even with the alk. so high i have no burning of the sps's and they all have great color and are plating and growing good. I'm trying to get the alk. down to 12 or 13 though in the long run. I also have a orange cap frag in my soft coral tank where the alk. is only 8dk and he is doing great also, so this may be a little confusing but as you can see success can be attained at both ends. I don't know much about sps's yet so take what i've said and consider it ONLY MY personal experience. Jim
nhlblues44 is offline  
Old 04-30-2004, 02:59 PM   #3
Little Fishy
pomme's Avatar
Join Date: Oct 2003
Location: Cornwall, England
Posts: 354
Images: 1
yeah i have leveled mine out at 10 dkh just for being in the middle, and everything seems to be doing well, and more colour coming out but i think this is from the lights i added.
pomme is offline  
Old 04-30-2004, 05:04 PM   #4
The Border Collie Mod
Spanky's Avatar
Join Date: Feb 2001
Location: right now? in my chair
Posts: 13,218
Images: 2
You can get alk burn from too high too long.

I stay in the 400 range on Ca and the 8-9 dkh. If you're having pH problems, look to better circulation and less CO2.
Clifford TRT's Mascot -->
Spanky is offline  

acro colonies , sps system

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Similar Threads
Thread Thread Starter Forum Replies Last Post
whats the name of this Sara7814 General Reef Discussion 15 12-10-2006 10:31 AM
whats this?? cause i got it Sara7814 General Reef Discussion 18 11-29-2006 11:37 AM
So.... whats with this? icebear Margaritaville 3 11-03-2006 04:51 PM
lighting, whats the best and whats not bill santana General Reef Discussion 3 11-01-2006 08:51 PM
Whats UP!!!! Ic3y Atlanta Reef Club 0 10-13-2003 01:42 AM

Similar Issues
Issue Issue Starter Forum Replies Last Post
whats an invertabrate.com obrut General Reef Discussion 21 2012-04-20 20:14:06
whats better crushed coral or live sand nosy-naso Equipment, Start-up, and Education Archive 7 2000-12-31 11:20:00
whats difference kalk calcium reactor noah Skimmers/Equipment/Reactors Archive 8 2001-05-12 08:02:00
whats salinity Allen General Reef Discussion 3 2001-07-21 01:11:00
whats a good powerhead for a 29 gal Martinwinte General Reef Discussion 2 2013-01-09 21:32:18

All times are GMT -5. The time now is 09:26 PM.

Powered by
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Our lawyer tells us that, by pressing the "New Thread" or "New Reply" button, you acknowledge that the opinions and information expressed in your article are yours alone and not those of thereeftank.com, dba The Reef Tank. Further, you agree to indemnify The Reef Tank, its moderators, administrators and agents from any and all liability which may arise as a result of your article. (C)opyright 2006 TheReefTank.com