I'm intrigued as to how some of you go about preparing leaf litter for use in your substrates. I've always been steered away from their use due to the beliefs of colleagues, that they can often cause the build-up of anoxic pockets and the production of toxic Hydrogen Sulphide. For those of you who do it routinely, I would like to know:
What species you use?
How much is safe?
Their effect on water chemistry?
Pre-use treatments required?
Sited natural occurrences in freshwater ecologies?
Life span in the aquarium?
And any little tips or tricks you've found handy when using it?
The more specific you can be, the better