I want to make my 70 litre tank as natural as possible for my kribensis and rummy nose tetras. I want to make it look really good too but don't know much about the place that the kribensis come from and what plants grow there and if there is any wood or rocks in the water. I know they are cave spawners so I will put some caves in but as a zoo keeper I know how important it is for animals to be in a natural environment. Thanks for the help from Tom
/www.fao.org/docrep/005/t3660e/T3660E04.htm#tbl2