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RE: [APD] pH reduction
I would suggest using peat and also upping the CO2.
> -----Original Message-----
> From: Bill Wallace [mailto:bill_wallace at agfa.com]
> Sent: Monday, January 10, 2005 10:22 AM
> To: aquatic plants digest
> Subject: [APD] pH reduction
>
>
> Locally here, I have water with a very high pH (measuring
> between 8.5 and
> 9.5). This is high enough to kill most plants (not directly,
> just that
> growth is so slow that it gets covered with algae and dies),
> including
> duckweed. In some tanks with aeration, I can safely add
> vinegar (every 3
> days or so), and my plant growth is FAR better. Easy plants
> like Java
> moss, Java ferns and Vals are now growing, about doubling in the last
> month. However, in other tanks, (small ones), without any
> filtration (for
> bettas), the vinegar causes a nasty bacterial bloom that
> leaves a white
> sludge on top (and seems to be hard on the fish.) Is there a
> better acid
> that would be safe to add? I have ingredients for PMDD, but adding
> nutrients just results in algae blooms, at least any time
> until after I've
> got the pH down to a reasonable level. I've tried addition
> of CO2, but it
> doesn't lower the pH enough to allow good plant growth.
> I'm trying to apply Diana Walstad's methods as described in her book,
> which is what suggested to me that the pH of the water was
> the problem.
> Her book as a table of tests she performed at various pH
> levels indicating
> that many plants stop growing a little bit above pH 8. I've
> added soil
> to most of the tanks (which helps the pH problem somewhat.)
> In one tank,
> the soil change keeps the pH under 8 naturally, which is
> fine, but only in
> that one tank. Plant growth has never been a problem in that tank.
> Does anyone have any ideas?
>
> Thanks,
> Bill
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