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Re: Questions about Salvinia & Duckweed

     I have duckweed in my backyard pond, and it receives 6-7 hours of 
     direct Texas sun in the summer.  It just makes them grow even faster.  
     I have to regularly scoop out as much as I can, just to keep it from 
     covering the surface.
     
     Sounds like a nutrient deficiency instead of a sunlight problem.  
     Generally, when plants receive too much light they appear washed out, 
     or develop brown spots from sunburn.  I use PMDD both in my aquarium 
     and my backyard pond, and I have plants galore.  My water lillies have 
     been blooming since April.
     
     Thanks for the goldfish tip--I am going to get one, just for duckweed 
     control.