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Re: holes in leaves

Holes in Sword leaves it not typical of potassium deficiency. It is more
commonly observed in fast growing plants like Hygrophila. Holes in Sword
leaves might be caused by the rasping of a Plecostomus catfish however
it might also be due to a shortage of any of several minerals. Its best
to have a balanced supply of all mineral nutrients. 1/8 tsp of KNO3 per
day sounds very excessive to me. Are you also changing 10 gallons of
water each day?

Steve Pushak                              Vancouver, BC, CANADA 

Visit "Steve's Aquatic Page"      http://home.infinet.net/teban/
 for LOTS of pics, tips and links for aquatic gardening!!!