diff --git a/src/controllers/installationController.js b/src/controllers/installationController.js
index 1df1c564..67e829b5 100644
--- a/src/controllers/installationController.js
+++ b/src/controllers/installationController.js
@@ -1034,8 +1034,6 @@ exports.mastrerList = async (req, reply) => {
 //   }
 // }
 
-//const moment = require('moment'); // For time calculations
-
 
 exports.getMasterSlaveSummary = async (req, reply) => {
   try {
@@ -1660,6 +1658,7 @@ exports.getMasterSlaveSummary = async (req, reply) => {
 // };
 
 
+
 exports.getIotDataByCustomer = async (req, reply) => {
   try {
     const { customerId } = req.params;
@@ -1701,7 +1700,7 @@ exports.getIotDataByCustomer = async (req, reply) => {
       const connectedSlaves = sensors.filter(sensor => sensor.connected_to?.trim() === hardwareId);
 
       // Enrich tanks
-      const tanks = connectedSlaves.map(slave => {
+      let tanks = connectedSlaves.map(slave => {
         const slaveId = slave.hardwareId?.trim();
         const matchedTank = latestRecord.tanks.find(tank => tank.tankhardwareId === slaveId);
 
@@ -1723,6 +1722,9 @@ exports.getIotDataByCustomer = async (req, reply) => {
         };
       });
 
+      // ✅ Remove the first tank
+      tanks = tanks.slice(1);
+
       return {
         hardwareId,
         message,