Since you need to raise your alk and ph, you can use soda ash or if you prefer, you can use Borax and baking soda. Either will be effective. Aim for a ph reading of 7.4-7.6 although anywhere between 7.2-7.8 is OK and a TA reading between 80-125. After you add stuff, wait 4 or 5 hours to let it circulate and then retest and redose as needed.
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