Question about high kh

[Tham121988]

I started dosing triton core7 about a week ago (had water tests sent in) and am about to start the 6x water changes with the salt it recommended. Previously I was using coral pro systems by zeovit. The issue is I stopped dosing per tritons instructions to have the kh drop, but it has gone up. It is about 15. I test tap water and it's less than half that( I use ro/di water for my tank of course). What can I do to lower it to 8? It's a 12 gallon nano with a 10 gallon sump. It has been up about a year. Thanks for any help.

 

[Humblefish]

I started dosing triton core7 about a week ago (had water tests sent in) and am about to start the 6x water changes with the salt it recommended. Previously I was using coral pro systems by zeovit. The issue is I stopped dosing per tritons instructions to have the kh drop, but it has gone up. It is about 15. I test tap water and it's less than half that( I use ro/di water for my tank of course). What can I do to lower it to 8? It's a 12 gallon nano with a 10 gallon sump. It has been up about a year. Thanks for any help.

http://www.seachem.com/acid-buffer.php

Source: https://www.reef2reef.com/threads/h...ke-you-can-with-ph.188293/page-2#post-2186160

 

[Humblefish]

15 dKH is very high, but I would still lower it down to 9 slowly. Bringing it down too fast would be more harmful than the high alkalinity itself.

 

[Diesel]

Can I ask where your PH sit's at?

 

[Diesel]

Ok I'm confused, are we talking KH (general hardness) or DKH (carbonate hardness)?
Cause a KH of 15 can be possible but it says nothing about your DKH.
KH (general hardness) is the measurement of the total dissolved minerals in your aquarium water.

 

[Humblefish]

Ok I'm confused, are we talking KH (general hardness) or DKH (carbonate hardness)?
Cause a KH of 15 can be possible but it says nothing about your DKH.
KH (general hardness) is the measurement of the total dissolved minerals in your aquarium water.

Good catch, bro.

 

[Diesel]

Good catch, bro.

All that matters is the OP & his KH problem are getting help, my friend. ;)

Hmmm, I have seen that before :rolleyes:

 

[Humblefish]

All that matters is the OP & his KH problem are getting help, my friend. ;)

Hmmm, I have seen that before :rolleyes:

 

[Diesel]

Can we stay on topic please! o_O

 

[Tham121988]

Holy moly! Thanks for all the responses. I've been caught up with something else. Yes KH, not dKH. My pH is at 8.3 exactly. Using a digital pH meter and it's accurate. Just calibrated it again not long ago.

 

[Diesel]

Holy moly! Thanks for all the responses. I've been caught up with something else. Yes KH, not dKH. My pH is at 8.3 exactly. Using a digital pH meter and it's accurate. Just calibrated it again not long ago.

In that case 15 on the KH don't worry about that.
Test for your DKH (Carbonate Hardness) or as we here on R2R say ALK.
For a reef tank you test your DKH not KH.

Here's something to read up to http://www.reefkeeping.com/issues/2004-05/rhf/index.php

 

[Randy Holmes-Farley Verified Community Expert]

KH is carbonate hardness. It is not general hardness (GH, or dGH).

dKH stands for degrees of KH.

He should be writing dKH, in any case. That is certainly what he is reporting. General hardness values in seawater are very large numbers.

Seawater has a total (general) hardness of about 6.3 g/L (6,300 ppm) of calcium carbonate equivalents or 353 dGH .

 

[Stigigemla]

I would test the osmosis water. It shall have a kH less than 0,01. That means a color change for the very first drip.
And I wouldnt add the anything from the carbonate bottles until the kH is down to 8.