Go Back   Aquarium Advice - Aquarium Forum Community > Saltwater and Reef > Saltwater Reef Aquaria
Click Here to Login

Join Aquarium Advice Today
Reply
 
Thread Tools Search this Thread Display Modes
Please support our sponsors and let them know you heard about them on AquariumAdvice.com
 
Old 05-07-2013, 03:10 PM   #1
Aquarium Advice Activist
 
bjj_junkie's Avatar
 
Join Date: Nov 2012
Location: Miami Beach, FL
Posts: 174
Why is my kh so high?

I tested today and was shocked to find my calcium low and my kh too high. What causes kh to go up and what are the affects of it in a reef tank?

Parameters

Ammonia 0ppm
Nitrite 0ppm
Nitrate 0ppm
Phosphate 0ppm
Calcium 300
Kh 214.8
Salinity 1.024
Ph last 24 hours 8.04 - 8.35
Temp stays between 78.5 and 81.2
__________________

__________________
bjj_junkie is offline   Reply With Quote
Old 05-07-2013, 03:16 PM   #2
Aquarium Advice Freak
 
Liberty's Avatar
 
Join Date: Sep 2012
Location: Tampa
Posts: 210
Buffers? Do you use them? And is that dkh? Might need a.new test kit
__________________

__________________
Liberty is offline   Reply With Quote
Old 05-07-2013, 03:25 PM   #3
Aquarium Advice Addict
 
Ingy's Avatar
 
Join Date: May 2012
Location: Comox, BC, Canada
Posts: 1,837
Standard measurement for Carbonate hardness is dKh, not ppm. so your 214 = 12 dKh. yes its high, but still in the acceptible range. As said, buffers and water changes will cause it to go up. Having a low calcium level like you do will allow it to stay up as well.
__________________
Ingy is offline   Reply With Quote
Old 05-07-2013, 04:13 PM   #4
Aquarium Advice Addict
 
jeffaquarius's Avatar
 
Join Date: Jan 2013
Location: Los Angeles, California
Posts: 1,933
I had similar problem before and the reason is messing up the PH with buffers. Yes pwc is the solution as Ingy suggested.
__________________
jeffaquarius is offline   Reply With Quote
Old 05-07-2013, 05:01 PM   #5
Aquarium Advice Activist
 
bjj_junkie's Avatar
 
Join Date: Nov 2012
Location: Miami Beach, FL
Posts: 174
I'm sorry, I'm still understanding the whole supplementation thing. don't I need to dose to get my calcium up? But is I keep dosing the kh stays high right?.. Pwc, are we talking 10%?
__________________
bjj_junkie is offline   Reply With Quote
Old 05-07-2013, 06:00 PM   #6
Aquarium Advice Freak
 
Liberty's Avatar
 
Join Date: Sep 2012
Location: Tampa
Posts: 210
Quote:
Originally Posted by bjj_junkie View Post
I'm sorry, I'm still understanding the whole supplementation thing. don't I need to dose to get my calcium up? But is I keep dosing the kh stays high right?.. Pwc, are we talking 10%?
Dosing is a two part if you have the demand for it. Like hard corals. I would stop the kh or alkalinity dosing and just do pwc water changes 10% a weeks good. Still it drops to 10
I keep mine around 8.5 to 9 dkh calcium 430 and don't forget magnesium 1350
Look up bulk reef supply on You tube
__________________
Liberty is offline   Reply With Quote
Old 05-07-2013, 06:12 PM   #7
Aquarium Advice Activist
 
bjj_junkie's Avatar
 
Join Date: Nov 2012
Location: Miami Beach, FL
Posts: 174
Quote:
Originally Posted by Liberty View Post

Dosing is a two part if you have the demand for it. Like hard corals. I would stop the kh or alkalinity dosing and just do pwc water changes 10% a weeks good. Still it drops to 10
I keep mine around 8.5 to 9 dkh calcium 430 and don't forget magnesium 1350
Look up bulk reef supply on You tube
I do have hard corals that's why it's alarming to find it so low. I supplement magnesium weekly
__________________
bjj_junkie is offline   Reply With Quote
Old 05-07-2013, 06:22 PM   #8
Aquarium Advice Addict
 
Ingy's Avatar
 
Join Date: May 2012
Location: Comox, BC, Canada
Posts: 1,837
Yup, 10% weekly pwc will help stabalize levels. But having a low calcium will allow carbonates to climb. they have 2 different additives and if in a 2 part system like Liberty says, they will both go up together. But you really need your calc to go up, which means only 1 part needed.
Of course, if you don't have any corals you shouldn't need to dose at all.
__________________
Ingy is offline   Reply With Quote
Old 05-07-2013, 06:52 PM   #9
Aquarium Advice Addict
 
Gregcoyote's Avatar



Tank of the Month Award
 
Join Date: Feb 2011
Location: Columbia, Missouri
Posts: 8,322
It's a balancing act between calcium and alkalinity. Reefs have several chemical/biological balances that need maintaining and if you grow hard corals, this is a major one. Only two or three chemicals are involved here, adding calcium with a reactor or chemically to keep the value high as hard corals will deplete it. If you only have a few hard corals, supplementing isn't needed as modern salt mixes generally have all the calcium you need. Alkalinity can burn corals and allow ph to swing wildly if allowed to get too low. I shoot for a dkh of 9-12 and a calcium above 500ppm. Test and add supplements as needed over at least a week, no sudden changes, if calcium is okay, just add alkalinity until it gets where you want it. BRS has excellent info on this and sells the components for the solutions for far less than the packaged solutions at the LFS. My best guess is that a bit of properly prepared baking soda would set your alkalinity right.

Last thing, when you start growing concrete hard pink algae everywhere and are cursing it while trying to get it off...you have created optimum conditions for hard corals to grow.
__________________
Gregcoyote is offline   Reply With Quote
Old 05-07-2013, 07:07 PM   #10
Aquarium Advice Freak
 
Liberty's Avatar
 
Join Date: Sep 2012
Location: Tampa
Posts: 210
Quote:
Originally Posted by bjj_junkie View Post

I do have hard corals that's why it's alarming to find it so low. I supplement magnesium weekly
So you only used a buffer to keep the kh up?
And didn't dose calcium
__________________

__________________
Liberty is offline   Reply With Quote
Reply

Please support our sponsors and let them know you heard about them on AquariumAdvice.com

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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 Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off








» Photo Contest Winners








Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -4. The time now is 04:43 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.