Lowering RODI pH - The Planted Tank Forum
 
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post #1 of 3 (permalink) Old 03-14-2019, 02:57 AM Thread Starter
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Lowering RODI pH

I just purchased a 4 stage RODI from BRS. I have an RO system for my home that is giving me 6.6pH water which is great but not designed to produce the quantity needed.

After dosing the BRS unit to a dKH and dGH of 4, the PH is 7.4-7.6. Should I be aeriating the water over night after dosing an retest? As I understand the DI portion should give me a neutral pH but 6.6 is the sweet spot for me. Not sure why itís higher. Iíve run about 30 gallons through the unit before testing.
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post #2 of 3 (permalink) Old 03-14-2019, 09:17 PM
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Any time you increase KH, you raise pH. If you want a lower pH, don't add as much KH
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post #3 of 3 (permalink) Old 03-15-2019, 12:53 AM Thread Starter
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Removed the DI resin and replaced with a 1 micron carbon filter. All better now 😁
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