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[APD] RE: Aquatic-Plants Digest, Vol 16, Issue 13

> Aldrovanda vesiculosa is not supposed to like hard water.  Utricularia 
> spp. are supposed to take a little Ca, but not like really hard water. 
> I have only grown Aldrovanda in very soft water (10-30 ppm KH, 0 GH) and 
> Utricularia in water with very little Ca.  Next year I may try an 
> experiment with giving them more Ca.  As long as all other conditions 
> are ideal I expect that both Aldrovanda and Utricularia will be able to 
> handle a little more Ca.
> As for typical aquatic plants I have found that those native to soft 
> water can grow in the "liquid rock" that come out of my tap.  Although, 
> they may well show an initial setback due to the initial change in 
> conditions.
> Later,
> Bill

I've grow both genera in very hardwater, not a problem.
CO2, good NO3 etc.
The CP people love it when I send them some.
The terrestrial species are not so similar though in their needs.

Tom Barr

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