Planted Tank Guru
Join Date: Jan 2010
Location: Contra Costa CA
Ditto again: PFS is OK, but has no cationic exchange capacity. To use it for plants you will need to add fertilizers.
I am not sure it needs such a slow acclimation. If you are using the same tank, then I would just swap out the rocks and add driftwood, plant it and refill with Discus-appropriate water.
If you are moving the substrate to a different tank, here is what I would do:
1) Skim the top 1/2" or less of sand. Set this aside. Keep it damp.
2) Put slow release fertilizer on the actual floor of the tank.
2) Move the remaining substrate to the new tank. Add more if needed, or don't use it all if you have too much. Be careful not to allow the fertilizer to drift up through the sand.
3) Spread the reserved sand over the top of the other sand. While planting make some effort not to stir this too much, not to dig it in too deep. You could plant before adding this, then add it like a cap.
Reason: The top 1/2" or less of the substrate has the maximum population of beneficial organisms because that is where the most oxygen is. By keeping that separate, then placing it on the top of the substrate in the new set up these organisms will continue to thrive.
If you are still worried about the nitrifying bacteria then add a small bottle of any product with Nitrospira species of bacteria. Any other bacterial supplement is a waste of money.