Hi! I am wanting to redo my established aquarium and add more live plants (hopefully some carpetting). I currently have gravel in the bottom with a bit of tropica soil that I bought from petland on top (and slowly mixing down into the gravel). I am considering buying some Eco Complete soil for my substrate and I was wondering if you all would recommend capping my current substrate with it, mixing it into my current substrate, or removing my current substrate and starting fresh with only the Eco Complete. OR, would you even recommend eco complete at all? Thanks!