Low ph, need help

The pH in both of my hydroponic boxes are low around 5 maybe four and a half. I have run out of up ph. This little one-horse town has nothing. Is there something I can do to raise my pH because it will be 7 to 10 days before I can get any through the mail.

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@Rusty do you have any liquid kelp or baking soda? Fine wood ash?

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I got baking soda, will that help

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Should I start with say, 1 teaspoon per gallon

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@Rusty I’d start with 1/2 tsp per gallon. It has a ph of 8 but it’s more reactive than liquid kelp and it will increase alkalinity faster.

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Tanks for info. now I’m off to see the wizard

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Lime be also bring it up if you have any

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