How to decrease KH level?

[alexgan]

Hi All,

Need your expertise to teach me how to lower the Kh level in my tank.

Brought NURAFIN test kit yesterday and realised that my KH level very

high....about 20 drop then start to change to yellow color.

My calcium is 400

My PH is 8.3

Question:-

1) Should is change water?

2) Is there any product in the market that can lower KH level?

Fishes and LPS are doing great but my 1 SPS is dying. Another 3

sps (acro) is fine...thinking to sell it away before the damage start...

Need your advise urgently....

[weileong]

If your test kit is indeed giving the correct reading then do some water change will lower the kH.

[kareen]

ur calcium and ph level looks quite alright.... how come your KH can be so high? What did u add to your tank to bring the KH so high? Oh yes, KH can be high during the photosynesthesis period. The best time to measure KH is just before the lights is on.

If the KH is really that high, then my advise is to do a partial water change with a good salt mix (eg. corallife, tropic martin, etc) to bring down gradually. Any dramatic changes do more harm to the corals.

Juz my 2 cents.

[scarab]

Suggest you test with a different test kit, maybe try Salifert to reconfirm your kH. Your calcium level is good so it's a little suprising that your kH is so high, unless you excessively buff up your kH. If test with diff test kit still show high kH, do partial water change like what the other reefers have suggested.

[alexgan]

Hi All,

Firstly, would like to thank for all you suggestion. I maintain my water by weekend change 10% water. Since Karen was say photosynesthesis period may experience KH high then i try tonight again after i switch off the light and do the testing

Another question if Kh high will it hurt my coral?

[weileong]

I supposed Karen refers to the pH instead of the kH.

kH should stable constant throughout the day. It is the pH that varies.

[surfedelic]

I encountered the same thing once because I was playing with the KH parameter - you could try Cal buffer to bring down the KH or just do a partial water change - that would be the fastest.

I realised that some sps is very sensitive to KH increase while others doesn't really give a damn. I have one acro which will always be the first to show sign of ionic imbalance like giving off white thread.. when i pushes up my KH. After a day or 2 it would look normal again.

Hope it helps.

[alexgan]

Oppsss....Karen refering is Ph instead? Then i really clueless?

Surfedelic, you refering Cal buffer is it the same is Klawasser CACO2?

As right now i drip CACO2 to my tank? Since last night i dicover my KH so high and i stop dripping until i find solution to lower down my KH.

Haiz....marine stuff really headache

[weileong]

I would suggest like what bro scarab suggested to get another brand test kit to measure the kH again

[SharkBait]

Its definitely your testkit. No way you can keep your calcium at that level with high kh. Unless you are using the same brand of testkit for the calcium.

[alexgan]

thanks weileong, i would buy a new test kit after i tried series of ways to lower KH....wasted my $$ haizzzzzz

[weileong]

Go for the salifert as most pple use it with reliable readings.

[alexgan]

Hi Shark,

My test kit both is same leh....both is Nurafin from CANADA? I even shake the bottle before drip.....i really clueless now?

[alexgan]

Weileong, how much is salifert? and where to get it in case i need to buy it.....

[weileong]

Salifert kH testkit I think price ard $20+ don't really remember. Can get from EAN if you're in the east.

[alexgan]

thanks Weileong,

Guess, what i will do now is go to fish farm get a few packet sea water and change water. Then stop dripping Kalwasser. And see how is goes?

If this works....then i will post again and tell everyone how to bring down KH......

[dradttg]

Alternatively, go for Sera. I have been using it for 1 over year now. Only $9.

dKH kit is just a very simple test kit dont have to go for so ex one.

[kareen]

Before spending $$$ mindlessly.... perhaps this will help....

additives.pdf

[kareen]

oop this is the correct one.

alkalinity.pdf

[alexgan]

Thanks Karen but very chim....read until i blur....hehe

[kareen]

slowly the content will make sense to you as you gain more experience.....