What's wrong with ammonium?

[Amer Faour <AFAOUR@santandersupernet.com>]

	My question could seem a strange one... Obviously I mean what's wrong with
ammonium(Nh4) in a pH=6?

	I have just spawned a couple of gold rams in water with 6 mg/l of
ammonium. The fish are OK, so I wonder what's wrong with that if we keep
care in mantaining that water's pH under 6. Everyone knows that this
ammonium level would become a close to death  ammonia level in a neutral to
slightly basic water. 
	
	If we have a tank with no biological filtration, and we keep the water
really acid, what ammonium level could the fish stand?

	Just wondering...


	Amer
	Salamanca. Spain


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