Re: Driftwood and pH
>Could a piece of driftwood in my 135 gallon tank be buffer my pH at
>7.6? After replacing my gravel 6 months ago after finding out it was
>causing my pH and hardness to rise, I haven't been able to get my pH
>down even after bubbling CO2 into the return line from my filter.
I don't think driftwood would raise your pH. do you have any of that
Terralit fertilizer? I think another discus keeper mentioned that it raised
the pH in her tank.
>I purchased an RO unit which is probably one of the best investments
>you could do if you live in a state that has as hard of water as mine
>does (Utah). I got the hardness down from over 30 ppm to about 6-7
>ppm by diluting the tap with RO water. The pH of the tap is 7.6
>and when mixed with RO it remains at 7.6.
30 ppm is not much. Discus are bred commercially at 50 ppm. Are you
perhaps talking about 30 degrees hardness?
>My limited understanding of the chemistry involved leads me to two
>1- not nearly enough co2 is being dissovled in the tank, so increase
>the amount bubbled in the return line (an idea I don't like because my
tank houses 4
>almost full grown discus who at last if I remember breath oxygen and
>not carbon dioxide), or hook up in my tank the ugly co2 diffuser
>that came with my sandpoint co2 tank to try and diffuse more of the
>gas that is being let out. (those of you who have one know
>what a big green ugly monster it is, not to mention you have to hook
>up a powerhead to it)
Another method, which won't show up in a heavily planted tank, is to bubble
th CO2 into an overturned (sideways) mason jar, preferably filled with
bioballs. This will diffuse the CO2 slowly.
>2- something is buffer my water. I tested the gravel extensively, it
>would raise RO water to about 6.8 and then stop, the only other
>object in the tank is a big piece of driftwood? I got the impression
>that a decaying piece of driftwood would actually lower pH.
I should as it releases tannic acid. Is your water ever turning brown?
Even if its not releasing tannins, it still shouldn't raise your pH.
Hope this helps,