Hi
Just another quick question, has anyone used something called super naturals substrate? Anything i need yo know about it?
I assume you are referring to these:
http://caribsea.com/caribsea_super-naturals.html
Substrate is another topic. First question is, what fish species, as some have very specific needs when it comes to substrate. Tetras won't fuss, but with tetras we usually find cories or similar catfish, and this does matter. Sand is your only option for a natural (to the fish) substrate (mud would be the other natural, but not many of us want that
).
Next is colour. Avoid white, as this is not natural to the fish and does cause stress.
So with that in mind, of the ones pictured in the above link, only Tahitian Moon and River of Doubt would seem appropriate. But that brings us to cost, and these are expensive.
Many of us here, including myself, use play sand. It comes in a dark tone, usually grey based or buff based, and is very natural under water. It is refined to remove all roughness, so fish safe. Plants grow very well in it. Add to all those benefits the minimal cost, and you can't beat it.
I had a black sand in one tank for two years, but it looked more grey under the water and lighting, and every little bit of detritus stuck out, something I never see with my play sand which now covers the substrate in all 8 tanks.
Byron.