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> When the pH is above 7 is the ammonium turn to ammonia? And if it turns
> to ammonia is this dangerous to plants? I have a friend who just started
> his tank about two weeks ago and he planted it right away. His plants
> look unhealthy. His set up should be growing the plants with ease, he is
> doing the same as I am and I have been successful with the same type of
> plants that he is growing. After going round and round with him about
> what may be causing his plants to look brownish with thin leaves the
> only conclusion I can come to is that the tank is cycling. Though he
> does say that his pH is right at 7?
Plants in a new aquarium take a couple of weeks to develop roots to the
point where they can grow reasonably. Some slow growing plants like
Crypts take even longer to establish a good root system. Your friend may
have a new substrate which is poor in certain nutrients and that may
also make a big difference even if the water nutrients you use are the
same. The ammonia/nitrogen cycle is not the cause of his problems.
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!!!