diff --git a/prototypes/basic-crusher.lua b/prototypes/basic-crusher.lua
index efcbed3..0d14261 100644
--- a/prototypes/basic-crusher.lua
+++ b/prototypes/basic-crusher.lua
@@ -172,4 +172,5 @@ data:extend({
   },
 })
 util.add_unlock("automation-2", "basic-crusher")
+util.add_prerequisite("silica-processing", "automation-2")
 end
diff --git a/prototypes/silica-recipe.lua b/prototypes/silica-recipe.lua
index 27b8481..9b9ba67 100644
--- a/prototypes/silica-recipe.lua
+++ b/prototypes/silica-recipe.lua
@@ -92,6 +92,7 @@ data:extend(
     name = "silica-processing",
     icon_size = 256, icon_mipmaps = 4,
     icon = "__bzsilicon__/graphics/technology/silica-processing.png",
+    prerequisites = {"logistic-science-pack"},
     effects =
     {
       {
@@ -105,6 +106,7 @@ data:extend(
       ingredients =
       {
         {"automation-science-pack", 1},
+        {"logistic-science-pack", 1},
       },
       time = 30
     },
diff --git a/prototypes/silicon-recipe.lua b/prototypes/silicon-recipe.lua
index 6425704..a5127bc 100644
--- a/prototypes/silicon-recipe.lua
+++ b/prototypes/silicon-recipe.lua
@@ -7,6 +7,13 @@ if mods["Krastorio2"] then
     util.add_unlock("kr-silicon-processing", "silicon")
   end
 end
+local prerequisites = {}
+
+if util.me.more_intermediates() and mods["space-age"] then
+  prerequisites = {"silica-processing", "sulfur-processing"}
+else
+  prerequisites = {"silica-processing", "logistic-science-pack"}
+end
 
 data:extend(
 {
@@ -80,7 +87,7 @@ data:extend(
       },
       time = 30
     },
-    prerequisites = {"silica-processing", "logistic-science-pack"},
+    prerequisites = prerequisites,
     order = "b-b"
   } or nil,
 }
@@ -130,7 +137,7 @@ data:extend({
     icon = "__bzsilicon__/graphics/icons/silicone-recipe.png",
     icon_size = 128,
     subgroup = "intermediate-product",
-    category = mods["space-age"] and "organic-or-chemistry" or "chemistry",
+    category = mods["space-age"] and "organic-or-chemistry" or "crafting-with-fluid",
     enabled = false,
     energy_required = 10,
     allow_productivity = true,
@@ -154,7 +161,7 @@ data:extend({
   {
     type = "recipe",
     name = "solar-cell",
-    category = "crafting-with-fluid",
+    category = "crafting",
     subgroup = "intermediate-product",
     enabled = false,
     energy_required = 2,
@@ -175,3 +182,10 @@ if not mods["space-age"] then
 end
 end
 util.add_effect("kr-fluids-chemistry", {type="unlock-recipe", recipe="hydrogen-chloride"})
+
+if util.me.more_intermediates() and not mods["space-age"] then
+  util.add_unlock("advanced-circuit", "silicon-wafer")
+  util.add_prerequisite("advanced-circuit", "sulfur-processing")
+  util.add_prerequisite("circuit-network", "advanced-circuit")
+  util.add_prerequisite("solar-energy", "advanced-circuit")
+end
diff --git a/recipe-updates.lua b/recipe-updates.lua
index 480015a..06306b4 100644
--- a/recipe-updates.lua
+++ b/recipe-updates.lua
@@ -57,6 +57,8 @@ if data.raw.item["silicone"] then
     util.add_ingredient("lubricant", "silicone", 1)
     util.replace_some_ingredient("engine-unit", "pipe", 1, "silicone", 1)
     util.add_prerequisite("engine", "silicon-processing")
+    util.remove_prior_unlocks("advanced-circuit", "silicon-wafer")
+    util.add_prerequisite("silicon-processing", "automation-2")
     util.add_ingredient("power-armor", "silicone", 20)
     util.add_ingredient("exoskeleton-equipment", "silicone", 10)
     util.add_ingredient("fission-reactor-equipment", "silicone", 80)