How to raise ph in new mixed water ?

[andre zaharchenya]

made new water and forgot to turn on power head.

 

[Randy Holmes-Farley Verified Community Expert]

You mean alkalinity? You can raise it with baking soda as needed to counter excessive precipitation. You might need to check calcium too.

I’d ignore pH in new salt water.

 

[andre zaharchenya]

You mean alkalinity? You can raise it with baking soda as needed to counter excessive precipitation. You might need to check calcium too.

I’d ignore pH in new salt water.

I keep my alk stable with kalkwasser. I left my new made rodi water with powered head off for 5 days and was told oh will be low. Mixed it with salt now and checked ph and it’s at 7.5.

 

[Bayareareefer18]

I keep my alk stable with kalkwasser. I left my new made rodi water with powered head off for 5 days and was told oh will be low. Mixed it with salt now and checked ph and it’s at 7.5.

Soda ash has a greater affect on ph than alk and visa versa bicarb will have greater affect on alk than ph

 

[chipmunkofdoom2]

I keep my alk stable with kalkwasser. I left my new made rodi water with powered head off for 5 days and was told oh will be low. Mixed it with salt now and checked ph and it’s at 7.5.

Wait, so you left the powerhead off in the deionoized water only? There was no salt mix in the water, it was just water? If so, that will have no effect on pH at all. Most people don't aerate or mix their RO/DI water at all. As long as you started the pump before you added the salt mix, the pH should be normal.

 

[Randy Holmes-Farley Verified Community Expert]

I keep my alk stable with kalkwasser. I left my new made rodi water with powered head off for 5 days and was told oh will be low. Mixed it with salt now and checked ph and it’s at 7.5.

The pH of seawater is determined only by the alkalinity andcthe CO2 level. If the new pH is low after aeration, it is only because you have excess CO2 in your home air and I do not advise doing anything to the water to correct the pH.

 

[Randy Holmes-Farley Verified Community Expert]

Interestingly, the pH of sea water at pH 8.1 mixed with totally pure fresh water at pH ~7 will have a pH higher than the starting pH 8.1. [emoji3]

 

[Randy Holmes-Farley Verified Community Expert]

Soda ash has a greater affect on ph than alk and visa versa bicarb will have greater affect on alk than ph

I certainly agree that sodium carbonate raises pH while sodium bicarbonate does not (at least not before aeration) but I can’t understand how one compares the effect on pH to the effect on alkalinity. It does both, and to compare them is like claiming a television makes more light than sound.[emoji3]

 

[andre zaharchenya]

Wait, so you left the powerhead off in the deionoized water only? There was no salt mix in the water, it was just water? If so, that will have no effect on pH at all. Most people don't aerate or mix their RO/DI water at all. As long as you started the pump before you added the salt mix, the pH should be normal.

Yes pump was off then added salt and turned on the pump.

 

[andre zaharchenya]

Interestingly, the pH of sea water at pH 8.1 mixed with totally pure fresh water at pH ~7 will have a pH higher than the starting pH 8.1. [emoji3]

Is that what happened ? Lol

 

[andre zaharchenya]

The pH of seawater is determined only by the alkalinity andcthe CO2 level. If the new pH is low after aeration, it is only because you have excess CO2 in your home air and I do not advise doing anything to the water to correct the pH.

Kaleaswer does a great job at keeping my Alk stable around 9.

 

[Randy Holmes-Farley Verified Community Expert]

Kaleaswer does a great job at keeping my Alk stable around 9.

Great! It’s the only alk and calcium supplement that I used for 20 years on my tank. [emoji3]