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'New house' pH change

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I've moved house, and I'm not used to these new pH numbers and my mind's gone blank.

I'm half way through a water change and wondering whether 50% change is the max I can do?

Current tank water:

PH- between 6.4 and 6.6

Kh- 5 drops

New water for adding:

Ph- between 7.4 and 7.6

Kh- 8 drops

Do I need to add any gold buffer?

I did 100% WC last week and the water was 7.6. I don't understand why the big drop?

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yes, i would be adding gold buffer if you have it at hand. if not, baking powder.

the difference is too great to just be adding untreated new water. i guess you could do 25% and then 25% a few hours later.. but what a headache.

KH is a little low, prefer drops to be between 6-11.

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Thank you Helen. Would the buffer keep it from dropping for next week?

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the buffer will keep it stable from water change to water change :) you will need to keep retesting your tap water before every waterchange to determine if adding it is required. being in a new place, it's best you keep a chart with your test results so that you can determine if the water is consistently unstable or if it's a once off.

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yes, i would be adding gold buffer if you have it at hand. if not, baking powder.

the difference is too great to just be adding untreated new water. i guess you could do 25% and then 25% a few hours later.. but what a headache.

KH is a little low, prefer drops to be between 6-11.

Helen, should baking soda (pure Na bicarb) be added or baking powder (Na bicarb plus acidifying agent and starch)? I'm just curious because usually baking soda is used to increase pH, but I'm not sure whether it matters in a fish tank.

Sent from my SCH-I535 using Tapatalk

Edited by *Amanda*

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In case Helen is offline, she meant baking soda :)

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In case Helen is offline, she meant baking soda :)

Good thing Helen has a full staff who can translate from Helenism to Kokonic. :rofl

I do believe she means baking soda, and not baking powder.

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I thought so ... I was just making sure! :-)

Sent from my SCH-I535 using Tapatalk

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Thank you :)

I had gold buffer to hand anyways.

Can anyone tell me what caused the drop in pH in the tank?

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yes, sorry, baking soda.

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Thank you :)

I had gold buffer to hand anyways.

Can anyone tell me what caused the drop in pH in the tank?

The pH of aquariums tends to drop between water changes for many reasons:

* The nitrogen cycle produces hydrogen ions

* Fish and bacteria produce carbon dioxide

* The photosynthesis process of any plants

KH is essentially the buffering capacity of the water stay at a stable pH despite these things. It seems like your KH has also dropped between water changes. A buffer product or baking soda will increase your KH and thereby stabilise your pH. Yay science! :)

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