@fartoblue
Yes, keep using the silica.
What silica product are you using?
A pre-mix (Armor-Si, Rhino (for)skin, Silica Blast, etc…), AgSil-16H, or Grow-Sil?
If you are using a pre-mix or AgSil-16H (same thing), then you will want to add this at the beginning when mixing your fertilizer, but...