Low Alkalinity - The Planted Tank Forum
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post #1 of 2 (permalink) Old 04-05-2013, 06:30 PM Thread Starter
Algae Grower
Join Date: Sep 2012
Location: Colorado
Posts: 5
Low Alkalinity


My tank is a freshwater 29-gallon with a closed top, a light that stays on for approximately 8 hours a day, two underwater plants, a small cluster of red root floater plants, five harlequin rasboras, and a plecostomus that's only a few inches long.

Just did a water parameter test: all parameters are perfect (even pH) except for alkalinity, which is showing up pretty low. What can I do to adjust the alkalinity and bring it up a bit? (The only advice I'm finding online always correlates an alkalinity problem with pH, but the pH in my tank is perfectly fine!)

Additional note: the tank has been up and running for two years.

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post #2 of 2 (permalink) Old 04-05-2013, 09:03 PM
Darkblade48's Avatar
Join Date: Jan 2008
Location: Toronto/Singapore
Posts: 10,674
What is your kH at?

Describing water parameters as "perfect" or "pretty low" is very vague; generally, hard numbers are much more helpful when trying to troubleshoot.


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alkalinity, water parameters

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