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Re: Cabomba in hardwater
I don't have particularly hard water but my cabomba was dying off. I was
down to a couple of six inch pieces that were flabby and pale. I was ready
to toss it when I noticed there was no phosphate in the water. The Cabomba
and Hydrocotyle leucocephala has come back to life with the addition of
phosphate to the level of only .5 ppm. It is even putting out flowering
stems although I haven't seen any flowers.
Other possible reason for its resurgence. Winter. The tank is a lot cooler
these days, from 78*F down to more like 70*F. I do have the C. caroliniana
red and green forms which aren't really tropical.
Same old light, same old water, same PMDD.
Check the phosphate and nitrate level.
Kathy in southern California
>I use R/O water, and normally, my tanks would have KH=2 and
>With Onyx they run at KH=6-8 and GH=10+
The tank I used it on in SF has about 4KH(from 2) and a GH of
4(up from 1)
as I recall.
>The Onyx is in two tanks and both were set up less than 5
>I am a little disappointed in the high numbers since I was
>finally grow Cabomba successfully since I added lots more
light, but it
>hates the hardness. It won't grow, at least not this early in
The high number do seem to indicate something _less than
But the Cabomba does fine in hard water. Something else is at
My GH is 2.5X higher and the KH is also higher. Cabomba is
>Greg Morin, I change water once a week, 30%. I am sincerely
>will not be restricted to hard water plants forever in these
What is a hard water plant?
The only plants I've seen that have had trouble in harder water
Rotala wallichii and P stellata. It might be an interaction with
else rather than a direct cause but everything else does great.
of 250+ ssp. I use to blame GH/KH for everything but that's not
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