Low Down on Calcium, DKH and PH

[supertank]

Can someone please give me the low down on Calcium, DKH, and PH as far as there relationship? I've tried to research this topic, but everything that I find is over my head with technicals.

I tested my water tonight, and currently my tank readings are as follows:
Calcium -- 460
DKH -- 8
PH -- 8.0 to 8.1
I know my PH is a little low so I added a buffer which I now know was not the smartest thing to do. I am planing on a 15% water change tomorrow morning, but I just want to make sure I know exactly what I am trying to achieve.
I found the chart below in the archives of this forum, and it says that my DKH should be around 14 since my calcium is at 460. Can anyone tell me if this chart is accurate? If that is the case, my DKH is extremely low. I have the two part Tech B supliments, so should I dose only the DKH part, or should I dose both? From what I have read, my calcium is at a good level, but my PH and DKH are both low. What should I do to get these up to the proper levels?
Alkalinity__Alkalinity____Alkalinity_____Calcium
(meq/L)____(dKH)___(ppm CaCO3)__(ppm Ca++)
--0.0

[hr]
0.0

[hr]
0

[hr]
360
--0.5

[hr]
1.4

[hr]
25

[hr]
370
--1.0

[hr]
2.8

[hr]
50

[hr]
380
--1.5

[hr]
4.2

[hr]
75

[hr]
390
--2.0

[hr]
5.6

[hr]
100

[hr]
400
--2.5

[hr]
7.0

[hr]
125

[hr]
410
--3.0

[hr]
8.4

[hr]
150

[hr]
420
--3.5

[hr]
9.8

[hr]
175

[hr]
430
--4.0

[hr]
11.2

[hr]
200

[hr]
440
--4.5

[hr]
12.6

[hr]
225

[hr]
450
--5.0

[hr]
14.0

[hr]
250

[hr]
460
--5.5

[hr]
15.4

[hr]
275

[hr]
470
--6.0

[hr]
16.8

[hr]
300

[hr]
480
--6.5

[hr]
18.2

[hr]
325

[hr]
490
--7.0

[hr]
19.6

[hr]
350

[hr]
500
Any help you can send my way would be greatly appreciated.
Thank You.

 

[loopy101]

if you would like to learn there relationships there are some incredable in deapth threads on this site by i believe spanko and or florida joe.(if i remember correctly) i would try to find the threads for you but short on time this morning. so just do a search for them on here and see what you come up with.

 

[supertank]

Thanks Loopy. I'll see what I can find.

 

[cranberry]

Bang Guy too.... he's explained it well in a recent thread.

 

[asharp13]

Yeah bang Brought the thunder in one of my recent threads on the correlation between those 3 and magnesium. Check it out, holler if u can't find it