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The_Browns
01/14/2008, 09:38 PM
These are my params at about 10 days of cycling.

pH: 7.8
Ammonia: 0
Trite: 1.0
Trate: 10
Calcium: 480
SG: 1.025
KH: 12
GH: 214.8

I don't really understand the Carbonate Hardness and General Hardness. The LFS said it replaces the Alk test. Is this true?

The_Browns
01/14/2008, 10:31 PM
Anyone, feedback?

The_Browns
01/15/2008, 07:21 AM
BUMP for morning crew.

stevedola
01/15/2008, 07:28 AM
still have some time to go on the cycle. should have no trites and your ph is low too;needs to be 8.2-8.3

if i were you id let my alk come down a bit. I keep mine at 8.4-----you'll have people tell you that 12dkh is fine but Ive never found my corals like it that high. I look to nature and NSW has a dkh from 6-8.

The_Browns
01/15/2008, 07:30 AM
How can I bring my pH up and my dKH down? Or will the cycling process do it itself?

stevedola
01/15/2008, 09:58 AM
let it stablize and see where the params level out to.10 days is insufficient imo for a cycle. I always use caution and dont start stocking with fish till about 5-6 weeks.

Randy Holmes-Farley
01/15/2008, 10:26 AM
Forget general hardness. It is a combination of calcium and magnesium in a weird combined unit.

Forget nitrite as it is almost never worth measuring, except for fun in monitoring the initial cycle. It is not toxic in marine systems.

Carbonate hardness and alkalinity are different terms for largely the same thing, and yours is fine, albeit near the high end (I recommend 7-11 dKH). It will drift down on its own.

pH is a bit low. Do not use buffers to raise it. The second article below has more on how to deal with it:

Reef Aquarium Water Parameters
http://www.reefkeeping.com/issues/2004-05/rhf/index.htm

Low pH: Causes and Cures
http://reefkeeping.com/issues/2004-09/rhf/index.htm

These may also help you get going:
The “How To” Guide to Reef Aquarium Chemistry for Beginners, Part 1: The Salt Water Itself
http://reefkeeping.com/issues/2007-03/rhf/index.php

The “How To” Guide to Reef Aquarium Chemistry for Beginners, Part 2: What Chemicals Must be Supplemented
http://reefkeeping.com/issues/2007-04/rhf/index.php

The "How To" Guide to Reef Aquarium Chemistry for Beginners, Part 3: pH
http://reefkeeping.com/issues/2007-05/rhf/index.php

The “How To” Guide to Reef Aquarium Chemistry for Beginners,
Part 4: What Chemicals May Detrimentally Accumulate
http://reefkeeping.com/issues/2007-09/rhf/index.php

The_Browns
01/15/2008, 06:42 PM
Overnight and my pH is at 8.2

plummike
01/15/2008, 06:58 PM
I try to adjust my pH and Alk in my water changes. If pH a little low add some buffer. Alk usually low in my makeup water (RO) so I add a little Bionic to that. Trial and error, just don't use much.

The_Browns
01/15/2008, 07:00 PM
pH should be 8.2, why adjust? What is ideal for Alk?

stevedola
01/15/2008, 07:15 PM
<a href=showthread.php?s=&postid=11604680#post11604680 target=_blank>Originally posted</a> by Randy Holmes-Farley


pH is a bit low. Do not use buffers to raise it. The second article below has more on how to deal with it:


listen to randy, dont use buffers.

Roy G. Biv
01/15/2008, 07:29 PM
<a href=showthread.php?s=&postid=11601842#post11601842 target=_blank>Originally posted</a> by The_Browns
KH: 12
GH: 214.8

I don't really understand the Carbonate Hardness and General Hardness. The LFS said it replaces the Alk test. Is this true?

214.8 / 17.8 = 12.06

The_Browns
01/15/2008, 08:32 PM
where did the 17.8 come from?

Roy G. Biv
01/15/2008, 08:45 PM
214.8 * .056 = 12.03!!!!

The_Browns
01/15/2008, 08:47 PM
Alright, again sorry if I am being dumb but where did the .056 come from?

Roy G. Biv
01/15/2008, 08:47 PM
1 / 17.8 = .056

The_Browns
01/15/2008, 08:49 PM
Grrrrr. 17.8 It's an unknown to me, I don't have that on any of my measurements....

Roy G. Biv
01/15/2008, 08:50 PM
More importantly, do you know what 231 represents to fish tank owners?

The_Browns
01/15/2008, 08:52 PM
That's it..... I give!

Roy G. Biv
01/15/2008, 08:54 PM
<a href=showthread.php?s=&postid=11609375#post11609375 target=_blank>Originally posted</a> by The_Browns
where did the 17.8 come from?

By definition 1dgh = 10mg/liter CaO
Atomic Weight Ca= 40 O=16 CaO= 56
So 10 mg/liter CaO contains 40/56 *10 = 7.143 mg/liter of Ca

By definition ppm Ca is not for elemental calcium but for ppm CaCO3 .
Atomic weight CaCO3=100
So 7.143 mg/liter of elemental Ca would be expressed as
100/40 * 7.143 = 17.8575 mg/liter(ppm)CaCO3.

1dgh = 17.86 ppm CaCO3 and 7.143 ppm Ca+2
(KH)

1dKh = 17.86 ppm CaCO3




231 = # of cubic inces in a gallon of water.

The_Browns
01/15/2008, 08:56 PM
So the result = what (alk?)

Roy G. Biv
01/15/2008, 08:58 PM
I hate math, I use this, its easier. :)

http://www.saltyzoo.com/SaltyCalcs/AlkConv.php

The_Browns
01/15/2008, 09:01 PM
hehe, sorry man, thanks for your patience.

The_Browns
01/15/2008, 09:03 PM
That works nice, So what is Ideal for that. I heard 12 is really good

Roy G. Biv
01/15/2008, 09:07 PM
<a href=showthread.php?s=&postid=11609648#post11609648 target=_blank>Originally posted</a> by The_Browns
hehe, sorry man, thanks for your patience.

I was just scewing with you.. :rollface:

I shoot for 10 - 12. I just wanted to show you that a few different tesk kits will usually give you the same results.. Its a pain in the ***. There are 3 standards of measurements when speaking in Alk.