In article , Shagster wrote:
Thanks for the feedback.. I've been using standard old "aquarium gravel"
for 2 years... Plants are growing like crazy... But I'm adding chemicals
like a mad scientist... I was hoping these newfangled gravels would simply
provide a continuous supply of nutrients for a longer period of time...

Nah. The clay bases ones do that ion exchange thing aned convert ammonia to
nitrates faster or some damn thing and are supposed to be higher in iron
but my plants still go chloritic in flourite if I don't dose Fe+traces.

If what you have works, stick with it,and resign yourself that
this is just a chemistry set with moving parts.

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