Alternative To Caribsea Eco-complete Substrate?

[Marisa_allen]

Can anyone recommend an alternative to the Caribsea Eco-Complete substrate as I cannot get hold of it anywhere and no-one can tell me when it will be next in stock!

Essentially I need some form of substrate which is black/dark, rounded 1-3mm diameter, which does not cloud water and will give the plants the nutrients they require.

thanks