diff --git a/usermods/Tubes/Tubes.h b/usermods/Tubes/Tubes.h
index 5c59f730eb..94aad9e8e3 100644
--- a/usermods/Tubes/Tubes.h
+++ b/usermods/Tubes/Tubes.h
@@ -20,6 +20,8 @@
 #define MASTER_PIN 25
 #define LEGACY_PIN 32  // DigUno Q4
 
+extern uint32_t savedStrip[];
+
 
 class TubesUsermod : public Usermod {
   private:
@@ -90,6 +92,27 @@ class TubesUsermod : public Usermod {
         master.handleOverlayDraw();
       }
 
+    #ifdef LED_MASK_OFFSET
+      uint16_t len = strip.getLengthTotal();
+      uint16_t savedLen = std::min(len, static_cast<uint16_t>(MAX_SAVED_LEDS));
+      static_assert( LED_MASK_OFFSET < 0xffff, "LED_MASK_OFFSET set to large");
+      uint16_t maskLength = std::min(len, static_cast<uint16_t>(LED_MASK_OFFSET));
+      // save existing strip
+      for (auto i = 0; i < savedLen; i++) {
+        savedStrip[i] = strip.getPixelColor(i);
+      }
+      // shift all colors to beginning of strip by mask length
+      uint16_t p = 0;
+      for (auto i = maskLength; i < len; i++) {
+        strip.setPixelColor(p++, strip.getPixelColor(i));
+      }
+      // black out the remaining
+      for ( ; p < len; p++) {
+          strip.setPixelColor(p, CRGB::Black);
+      }
+    #endif
+
+
       // When AP mode is on, make sure it's obvious
       // Blink when there's a connected client
       if (apActive) {
diff --git a/wled00/wled.cpp b/wled00/wled.cpp
index 8e35f00af7..337309beae 100644
--- a/wled00/wled.cpp
+++ b/wled00/wled.cpp
@@ -3,6 +3,7 @@
 #include "wled_ethernet.h"
 #include <Arduino.h>
 #include "espnow_broadcast.h"
+#include <algorithm>
 
 #if defined(ARDUINO_ARCH_ESP32) && defined(WLED_DISABLE_BROWNOUT_DET)
 #include "soc/soc.h"
@@ -40,6 +41,10 @@ void WLED::reset()
   ESP.restart();
 }
 
+#ifdef LED_MASK_OFFSET
+  uint32_t savedStrip[MAX_SAVED_LEDS] {0};
+#endif
+
 void WLED::loop()
 {
   #ifdef WLED_DEBUG
@@ -121,12 +126,21 @@ void WLED::loop()
     handlePresets();
     yield();
 
-    if (!offMode || strip.isOffRefreshRequired())
+    if (!offMode || strip.isOffRefreshRequired()) {
       strip.service();
+    #ifdef LED_MASK_OFFSET
+      // restore existing strip
+      uint16_t savedLen = std::min(strip.getLengthTotal(), static_cast<uint16_t>(MAX_SAVED_LEDS));
+      for (auto i = 0; i < savedLen; i++) {
+        strip.setPixelColor(i, savedStrip[i]);
+      }
+    #endif
+
     #ifdef ESP8266
     else if (!noWifiSleep)
       delay(1); //required to make sure ESP enters modem sleep (see #1184)
     #endif
+    }
   }
   #ifdef WLED_DEBUG
   stripMillis = millis() - stripMillis;