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Re: [APD] Sand substrate

I have as a matter of routine used ordinary construction river sand for all
my tanks(3 in no).
The sand is acid-washed before use.
All my tanks are densely planted low-tech non-co2 open-air & open natural
light tanks.
I do not use any other substrate additive. Ths fish poo is the main
gradually added fertiliser.
Occassionally, i.e. once in 2-3week, I add some kno3 & phosphate enema.
The plant growth is slow but acceptable. water changes are 25% once a month.


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