diff --git a/scripts/reactor_control.py b/scripts/reactor_control.py
index 979744f..a88414c 100644
--- a/scripts/reactor_control.py
+++ b/scripts/reactor_control.py
@@ -5,7 +5,7 @@ Architecture:
     - Rod PID: keeps CORE_TEMP at setpoint via ROD_BANK_POS_0_ORDERED
 
   Per-train control (trains 1/2/3, 0-indexed as 0/1/2 in param names):
-    - Primary pump: fixed 65% (higher than 50% improves heat transfer per manual)
+    - Primary pump: not touched; warns in TUI if far from suggested 65%
     - MSCV PI: drives train power output, gated on steam availability
     - Secondary pump feedforward: half of steam outlet + level PID
     - Bypass: hold at 0
@@ -128,11 +128,11 @@ class TrainController:
                            out_min=-2.0, out_max=2.0, integral_max=3.0)
         self.sec_level_target = 25_000.0
 
-        self.prim_pump = 65.0
+        self.prim_pump = float(nucon.get(f'COOLANT_CORE_CIRCULATION_PUMP_{self.i}_ORDERED_SPEED') or 50.0)
+        self.PRIM_PUMP_SUGGESTED = 65.0   # warn in TUI if far from this
         self.mscv      = 9.0
         self.sec_pump  = 40.0
 
-        set_param(f'COOLANT_CORE_CIRCULATION_PUMP_{self.i}_ORDERED_SPEED', self.prim_pump)
         set_param(f'STEAM_TURBINE_{self.i}_BYPASS_ORDERED', 0.0)
 
         self._params = [
@@ -141,6 +141,7 @@ class TrainController:
             f'STEAM_TURBINE_{self.i}_RPM',
             f'STEAM_TURBINE_{self.i}_BYPASS_ACTUAL',
             f'GENERATOR_{self.i}_KW',
+            f'COOLANT_CORE_CIRCULATION_PUMP_{self.i}_ORDERED_SPEED',
             f'COOLANT_SEC_CIRCULATION_PUMP_{self.i}_ORDERED_SPEED',
             f'COOLANT_SEC_{self.i}_LIQUID_VOLUME',
         ]
@@ -172,6 +173,8 @@ class TrainController:
         self.mscv = float(np.clip(new_mscv, 0.5, 100.0))
         set_param(f'MSCV_{self.i}_OPENING_ORDERED', self.mscv)
 
+        self.prim_pump = s.get(f'COOLANT_CORE_CIRCULATION_PUMP_{self.i}_ORDERED_SPEED', self.prim_pump)
+
         sec_ff      = steam_out / 2.0
         level       = s[f'COOLANT_SEC_{self.i}_LIQUID_VOLUME']
         level_error = self.sec_level_target - level
@@ -499,10 +502,14 @@ def run_controller(stdscr):
                 _safe_addstr(stdscr, row, 32,
                     f'[{_bar(pwr_pct, 14)}] {power_error/1000:+5.1f}MW  {tgt_str}')
                 row += 1
+                prim_warn  = abs(tc.prim_pump - tc.PRIM_PUMP_SUGGESTED) > 10
+                prim_attr  = YELLOW if prim_warn else 0
+                prim_str   = f'{tc.prim_pump:3.0f}%{"!" if prim_warn else " "}'
                 _safe_addstr(stdscr, row, 16,
-                    f'Steam: {steam_out:5.1f}  MSCV: {tc.mscv:4.1f}  '
-                    f'Prim: {tc.prim_pump:3.0f}%  Sec: {tc.sec_pump:3.0f}%  '
-                    f'Lvl: {level:.0f} (Δ{level_error:+.0f})')
+                    f'Steam: {steam_out:5.1f}  MSCV: {tc.mscv:4.1f}  Prim: ')
+                _safe_addstr(stdscr, row, 51, prim_str, prim_attr)
+                _safe_addstr(stdscr, row, 56,
+                    f' Sec: {tc.sec_pump:3.0f}%  Lvl: {level:.0f} (Δ{level_error:+.0f})')
             elif not is_active:
                 hint = ' (+/Up to add)' if is_sel else ''
                 _safe_addstr(stdscr, row, 16, f'not controlled{hint}',