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PO4 at 40ppm!! (text wrapped)
- To: <Aquatic-Plants at actwin_com>
- Subject: PO4 at 40ppm!! (text wrapped)
- From: "Lee Boon Chuan" <lee.bc at ellipsiz_com>
- Date: Fri, 4 Oct 2002 15:00:31 +0800
- Thread-index: AcJrF2Cc18MkoCnFRhqPqbDoD/uaUgAKLgGg
- Thread-topic: Aquatic Plants Digest V5 #377
Sorry guys, I just changed e-mail editor and did not notice the text
wrap setting. Here it is again.
Yesterday I tested my water and I found PO4 was at ridiculus level.
The last test I done was about 3~4 weeks ago.
I tested the test kit by getting reading from my tap water and some
distilled water. They turn out ok, so the test kit should be reliable.
I remembered adding some plant tabs into the substrate about 2 weeks
ago. I did some replanting last week. I checked the composition of
the tabs and found it contains "soluble phosphate" while only part of
the N is in the soluble form. I think that's why the PO4 shot up while
the NO3 is still in the reasonable range.
So far, there is no algae outbreak. In fact the plants are starting to
have tremedous growth especially the Hydrocotyle while there is no sign
speeding up of algae growth. And my Echinodorus ozelot is sending out
a flower stalk to the surface.
According to the posts in which Tom Barr has shared his findings about
algae vs plants, there should be little risk of algae outbreak if the
plants are kept in healthy condition. I am keeping my tank in this way
to see how things go. I would like to see if the P limitation theory
can be thrown right out of window.
I do have one concern. Will PO4 at this level have any other negative
impact of my plants or fishes?