Try adding potassium (potash.. 0-0-60) every 2 weeks for 3 cycles.
I have hard water, pH of 8.2, and the hyacinths didn't do well either.
Once on the potassium the higher level plants outcompete the hair algae
(which loves higher pH BTW), and the hair algae's growth slows way down.
My hyacinths then bloomed like crazy. They may, in your case, be lacking
other essentials, unless you do routine water change outs, in which case
that shouldn't be a factor.
Happy ponding
Greg


"Just Me "Koi"" wrote in message
...
In my pond, my water hardiness is sky high, so is my ph. Could this be
the
reason my water hyacinth are not doing well? Funny enough though the
plants
in the veggie filter including wh are doing great!

My Brother tells me that he does not think my pond has any salt in it.
That
if I should increase salt level to about .2 or .3. He doesn't think this
level of concentration will kill my plants or my fish. Is this going
backwards?

--
_______________________________________
"The difference between 'involvement' and 'commitment' is
like an eggs-and-ham breakfast:
The chicken was 'involved' - the pig was 'committed'."

http://community.webshots.com/user/godwino

"Lee Brouillet" wrote in message
...
Calcium Carbonate in its purest form is dolomite lime: try an
agricultural
supply place. (it's a shame: I have a 50 lb. bag in the garage I never
used!). Another source of Calcium Carbonate is crushed oyster shell
(many
people put a couple hundred lbs. of it in their filters to help maintain
KH). Now, I never used the dolomite lime because I found that regular
ol'
Arm n' Hammer baking soda (or its generic equivalent) worked easier and
was
more dependable. I use it to maintain KH, which buffers my pH.

Gypsum will also help precipitate stuff in suspension. You'll find it in
the
same place you find the dolomite lime.

What is your KH? Maybe baking soda will do what you want.

Lee
"BenignVanilla" m wrote
in
message ...
Does anyone have a source for Calcium Carbonate? My research is
telling
me
that it is the answer to my suspended clay problem and that it should
not
cause a problem with my plants or fish.

--
BenignVanilla
Pond Site: www.darofamily.com/jeff/links/mypond

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