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Woodstock · 08-03-2007, 12:16 PM

Check the calibration of your PH probe.

Ensure you have sufficient gas exchange/flow in your aquarium.

High amounts of CO2 will cause a low PH. I have the this issue with my new (air tight) home. I am guessing your indoor co2 is high. Try opening several windows and airing out your house/apt. You can test this by collecting two water samples in a large glass. Test the PH of both and then begin the test - place an airstone in one glass INSIDE the house; and an airstone in the other glass but place it OUTSIDE. After one hour, test the PH in both water samples. IF the outside one is higher, your indoor co2 is elevated.

08-03-2007, 12:16 PM	#4 (permalink)
Woodstock The Wand Geek was here. ;) Join Date: Nov 2003 Location: North Carolina Posts: 23,199 View Gallery Karma Komment Add yours!	Re: Another PH question Check the calibration of your PH probe. Ensure you have sufficient gas exchange/flow in your aquarium. High amounts of CO2 will cause a low PH. I have the this issue with my new (air tight) home. I am guessing your indoor co2 is high. Try opening several windows and airing out your house/apt. You can test this by collecting two water samples in a large glass. Test the PH of both and then begin the test - place an airstone in one glass INSIDE the house; and an airstone in the other glass but place it OUTSIDE. After one hour, test the PH in both water samples. IF the outside one is higher, your indoor co2 is elevated. __________________ ~Doni Marie~ *GOT ICH???* *My QT/Hospital Tank* ~120 Reef Chronicle ~ *~Breeding Picasso Clownfish~* "Energy and persistence conquer all things." Benjamin Franklin __________________________________________________ ______________________________________________ 120 mixed reef, dual Reeflux 10k 250 MHs, dual Geiseman Actinic T5s,Neptune AC III, ASM g3, 2x Korallia #3, Mag 9.5 return