diff --git a/src/rds.ts b/src/rds.ts
index 6b3f6d8..14961fa 100644
--- a/src/rds.ts
+++ b/src/rds.ts
@@ -49,6 +49,8 @@ export interface PostgresProps {
   readonly multiAz?: boolean;
   readonly allocatedStorage?: number;
   readonly maxAllocatedStorage?: number;
+  readonly replicaAllocatedStorage?: number
+  readonly replicaMaxAllocatedStorage?: number
   readonly storageType?: rds.StorageType;
   readonly backupRetention?: number;
   readonly deletionProtection?: boolean;
@@ -61,6 +63,9 @@ export interface PostgresProps {
   readonly metricTopicName?: string;
   readonly snsTopicCreate?: boolean;
   readonly storageEncrypted?: boolean;
+  readonly allowMajorVersionUpgrade?: boolean;
+  readonly autoMinorVersionUpgrade?: boolean;
+  readonly dbIOPS?: number;
   readonly tags?: Record<string, string>;
   readonly enableAlerts?: boolean; // Flag to enable/disable all alerts (default: true)
   // Custom alert thresholds
@@ -139,11 +144,15 @@ export class PostgresRDSCluster extends Construct {
       performanceInsightRetention: props.performanceInsightRetention,
       deleteAutomatedBackups: true,
       removalPolicy: RemovalPolicy.SNAPSHOT,
-      deletionProtection: props.deletionProtection,
+      deletionProtection: props.deletionProtection ?? true,
       cloudwatchLogsExports: ['postgresql'],
       copyTagsToSnapshot: true,
       allocatedStorage: props.allocatedStorage,
       maxAllocatedStorage: props.maxAllocatedStorage,
+      StorageType: props.storageType,
+      allowMajorVersionUpgrade: props.allowMajorVersionUpgrade ?? false,
+      autoMinorVersionUpgrade: props.autoMinorVersionUpgrade ?? false,
+      iops: props.dbIOPS,
     };
     const rdsInstance = props.snapshotIdentifier ? new rds.DatabaseInstanceFromSnapshot(this, `${props.clusterName}Cluster`, {
       ...commonInstanceProps,
@@ -154,8 +163,6 @@ export class PostgresRDSCluster extends Construct {
       ...commonInstanceProps,
       engine: props.postgresVersion,
       credentials: rds.Credentials.fromGeneratedSecret(props.databaseMasterUserName),
-      allowMajorVersionUpgrade: false,
-      autoMinorVersionUpgrade: true,
       backupRetention: props.backupRetention ? Duration.days(props.backupRetention) : Duration.days(0),
       storageEncrypted: props.storageEncrypted ?? false,
       databaseName: props.databaseName,
@@ -196,6 +203,13 @@ export class PostgresRDSCluster extends Construct {
       for (let index = 0; index < props.readReplicas.replicas; index++) {
         let readReplics = new rds.DatabaseInstanceReadReplica(this, `${props.clusterName}-rreplicas-${index}`, {
           sourceDatabaseInstance: rdsInstance,
+          subnetGroup: dbSubnetGroup,
+          deletionProtection: props.deletionProtection,
+          storageEncrypted: props.storageEncrypted,
+          storageType: props.storageType,
+          autoMinorVersionUpgrade: props.allowMajorVersionUpgrade ?? false,
+          allocatedStorage: props.replicaAllocatedStorage ?? props.allocatedStorage,
+          maxAllocatedStorage: props.replicaMaxAllocatedStorage ?? props.maxAllocatedStorage,
           instanceIdentifier: `${props.clusterName}-rreplicas-${index}`,
           instanceType: props.readReplicas.instanceType,
           enablePerformanceInsights: props.enablePerformanceInsights,
diff --git a/src/slackchatbot.ts b/src/slackchatbot.ts
index 9c7ae05..e4403cd 100644
--- a/src/slackchatbot.ts
+++ b/src/slackchatbot.ts
@@ -7,7 +7,7 @@ import {
 import { Construct } from 'constructs';
 
 export interface SlackChatbotProps {
-  readonly environmentName: string;
+  readonly slackChannelConfigurationName: string;
   readonly slackWorkspaceId: string;
   readonly slackChannelId: string;
   readonly notificationTopics: sns.ITopic[];
@@ -50,7 +50,7 @@ export class SlackChatbotIntegration extends Construct {
     this.slackChannel = new chatbot.SlackChannelConfiguration(this, `${this.node.id}-SlackChannelConfig`, {
       slackWorkspaceId: props.slackWorkspaceId,
       slackChannelId: props.slackChannelId,
-      slackChannelConfigurationName: `${props.environmentName}-tracking-rds-alerts`,
+      slackChannelConfigurationName: props.slackChannelConfigurationName,
       role: this.chatbotRole,
       notificationTopics: props.notificationTopics,
     });