Setting Up A Walstad Tank

[Steve H.]

I've been doing a lot of studying before I start my first planted tank.
But, now it's time to sh.. or get off the pot.

I have decided to use the Walstad Method because it best suits my low tech means. I will be changing my substrate on Sunday, and I have a question.

Before I read about the Walstad Method I was going to enrich the substrate with flourite gravel mix.
I already purchased the flourite.

Is it a good idea to mix in some of the flourite with the organic potting soil?
Or
Is this overkill, and will lead to excess nutrients and then algae?