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Re: High phosphate from tap
On Sun, 12 Mar 2000, Jeff Bodin wrote:
> I then measured it out of my Tap.... 10 PPM P. I use RO and it is about 1
> PPM out of the RO (not bad for 90% rejection).
>
> So, How high is high??? I know a bunch of you are going to say ZERO is
> ideal, but at what levels do we expect a massive algae breakout.
P can be arbitrarily high if the other controlling conditions in your tank
- like light and available iron levels - are right. For most purposes I
think 0.1 ppm phosphate (0.03 ppm P) is good, and 0.2 ppm phosphate (0.07
ppm P) might be high. I don't know how one might generalize a level that
is "too" high.
There is of course a huge variability, depending on your tank conditions.
Roger Miller