diff --git a/inputs.tf b/inputs.tf
index 1939e5e..02cf08f 100644
--- a/inputs.tf
+++ b/inputs.tf
@@ -60,8 +60,21 @@ variable "elb_config" {
     delay = 900
   }
 }
-
-
-
-
-
+variable "elb_5xx_threshold" {
+  default = {
+    warning   = 5
+    critical  = 10
+  }
+}
+variable "elb_4xx_threshold" {
+  default = {
+    warning   = 5
+    critical  = 10
+  }
+}
+variable "elb_backend_latency" {
+  default = {
+    warning   = 1000
+    critical  = 5000
+  }
+}
\ No newline at end of file
diff --git a/monitors-rds_mysql-basics.tf b/monitors-rds_mysql-basics.tf
index 078bc76..0d1bbf3 100644
--- a/monitors-rds_mysql-basics.tf
+++ b/monitors-rds_mysql-basics.tf
@@ -8,7 +8,7 @@ resource "datadog_monitor" "rds-mysql_cpu_80_15min" {
   count = "${var.dd_aws_rds == "enabled" ? 1 : 0 }"
 
 
-  query = "avg(last_15m):avg:aws.rds.cpuutilization{dd_monitoring:enabled,dd_aws_rds:enabled,env:${var.env},!dd_custom_rds-mysql:enabled} by {identifier,region} > 90"
+  query = "avg(last_15m):avg:aws.rds.cpuutilization{dd_monitoring:enabled,dd_aws_rds:enabled,env:${var.env}} by {name,region} > 90"
   type  = "query alert"
 
   thresholds {
@@ -33,7 +33,7 @@ resource "datadog_monitor" "mysql_rds_free_space_low" {
   message = "{{#is_alert}}\n${var.hno_escalation_group} \n{{/is_alert}} \n{{#is_recovery}}\n${var.hno_escalation_group}\n{{/is_recovery}}\n{{#is_warning}}\n${var.ho_escalation_group} \n{{/is_warning}} \n{{#is_warning_recovery}}\n${var.ho_escalation_group}\n{{/is_warning_recovery}}"
   
   type  = "query alert"
-  query = "avg(last_15m): avg:aws.rds.free_storage_space{dd_monitoring:enabled,dd_aws_rds:enabled,env:${var.env},!dd_custom_rds-mysql:enabled} by {identifier,region} /  avg:aws.rds.total_storage_space{dd_monitoring:enabled,dd_rds-mysql_basics:enabled,env:${var.env},!dd_custom_rds-mysql:enabled} by {identifier,region}  * 100 < 10"
+  query = "avg(last_15m): avg:aws.rds.free_storage_space{dd_monitoring:enabled,dd_aws_rds:enabled,env:${var.env}} by {name,region} /  avg:aws.rds.total_storage_space{dd_monitoring:enabled,dd_rds-mysql_basics:enabled,env:${var.env},!dd_custom_rds-mysql:enabled} by {identifier,region}  * 100 < 10"
   count = "${var.dd_aws_rds == "enabled" ? 1 : 0 }"
 
 
diff --git a/monitors_elb.tf b/monitors_elb.tf
index f6a8433..a66fb84 100644
--- a/monitors_elb.tf
+++ b/monitors_elb.tf
@@ -3,7 +3,7 @@ resource "datadog_monitor" "ELB_no_healthy_instances" {
   message = "{{#is_alert}}\n${var.hno_escalation_group} \n{{/is_alert}} \n{{#is_recovery}}\n${var.hno_escalation_group}\n{{/is_recovery}}"
 
   count = "${var.dd_aws_elb == "enabled" ? 1 : 0 }"
-  query = "avg(last_5m):avg:aws.elb.healthy_host_count{dd_monitoring:enabled,dd_aws_elb:enabled,env:${var.env}} by {identifier,region} == 0"
+  query = "avg(last_5m):avg:aws.elb.healthy_host_count{dd_monitoring:enabled,dd_aws_elb:enabled,env:${var.env}} by {loadbalancername,region} == 0"
   type  = "query alert"
 
   notify_no_data      = "${var.elb_config["notify_no_data"]}"
@@ -23,7 +23,7 @@ resource "datadog_monitor" "ELB_unhealthy_instances" {
   message = "{{#is_alert}}\n${var.ho_escalation_group} \n{{/is_alert}} \n{{#is_recovery}}\n${var.ho_escalation_group}\n{{/is_recovery}}"
 
   count = "${var.dd_aws_elb == "enabled" ? 1 : 0 }"
-  query = "avg(last_5m):avg:aws.elb.healthy_host_count{dd_monitoring:enabled,dd_aws_elb:enabled,env:${var.env}} by {identifier,region} == 0"
+  query = "avg(last_5m):avg:aws.elb.un_healthy_host_count{dd_monitoring:enabled,dd_aws_elb:enabled,env:${var.env}} by {loadbalancername,region} > 0"
   type  = "query alert"
 
   notify_no_data      = "${var.elb_config["notify_no_data"]}"
@@ -38,4 +38,79 @@ resource "datadog_monitor" "ELB_unhealthy_instances" {
   no_data_timeframe   = 20
 }
 
+resource "datadog_monitor" "ELB_too_much_5xx_backend" {
+  name    = "[${var.env}] ELB too much 5xx backend err on {{host.identifier}}"
+  message = "{{#is_alert}}\n${var.hno_escalation_group} \n{{/is_alert}} \n{{#is_recovery}}\n${var.hno_escalation_group}\n{{/is_recovery}}"
+
+  count = "${var.dd_aws_elb == "enabled" ? 1 : 0 }"
+  query = "avg(last_5m): avg:aws.elb.httpcode_backend_5xx{dd_monitoring:enabled,dd_aws_elb:enabled,env:${var.env}} by {loadbalancername,region} / avg:aws.elb.request_count{dd_monitoring:enabled,dd_aws_elb:enabled,env:${var.env}} by {loadbalancername,region} * 100 > ${var.elb_5xx_threshold["critical"]}"
+  type  = "query alert"
+
+  thresholds {
+    warning  = "${var.elb_5xx_threshold["warning"]}"
+    critical = "${var.elb_5xx_threshold["critical"]}"
+  }
+
+  notify_no_data      = "${var.elb_config["notify_no_data"]}"
+  evaluation_delay    = "${var.elb_config["delay"]}"
+  renotify_interval   = 60
+  notify_audit        = false
+  timeout_h           = 0
+  include_tags        = true
+  locked              = false
+  require_full_window = true
+  new_host_delay      = "${var.elb_config["delay"]}"
+  no_data_timeframe   = 20
+}
+
+resource "datadog_monitor" "ELB_too_much_4xx_backend" {
+  name    = "[${var.env}] ELB too much 4xx backend err on {{host.identifier}}"
+  message = "{{#is_alert}}\n${var.hno_escalation_group} \n{{/is_alert}} \n{{#is_recovery}}\n${var.hno_escalation_group}\n{{/is_recovery}}"
+
+  count = "${var.dd_aws_elb == "enabled" ? 1 : 0 }"
+  query = "avg(last_5m): avg:aws.elb.httpcode_backend_4xx{dd_monitoring:enabled,dd_aws_elb:enabled,env:${var.env}} by {loadbalancername,region} / avg:aws.elb.request_count{dd_monitoring:enabled,dd_aws_elb:enabled,env:${var.env}} by {loadbalancername,region} * 100 > ${var.elb_4xx_threshold["critical"]}"
+  type  = "query alert"
+
+  thresholds {
+    warning  = "${var.elb_4xx_threshold["warning"]}"
+    critical = "${var.elb_4xx_threshold["critical"]}"
+  }
+
+  notify_no_data      = "${var.elb_config["notify_no_data"]}"
+  evaluation_delay    = "${var.elb_config["delay"]}"
+  renotify_interval   = 60
+  notify_audit        = false
+  timeout_h           = 0
+  include_tags        = true
+  locked              = false
+  require_full_window = true
+  new_host_delay      = "${var.elb_config["delay"]}"
+  no_data_timeframe   = 20
+}
+
+resource "datadog_monitor" "ELB_backend_latency" {
+  name    = "[${var.env}] ELB latency to high on  {{host.identifier}}"
+  message = "{{#is_alert}}\n${var.ho_escalation_group} \n{{/is_alert}} \n{{#is_recovery}}\n${var.ho_escalation_group}\n{{/is_recovery}}"
+
+  count = "${var.dd_aws_elb == "enabled" ? 1 : 0 }"
+  query = "avg(last_5m):avg:aws.elb.latency{dd_monitoring:enabled,dd_aws_elb:enabled,env:${var.env}} by {loadbalancername,region} > ${var.elb_backend_latency["critical"]}"
+  type  = "query alert"
+
+  thresholds {
+    warning  = "${var.elb_backend_latency["warning"]}"
+    critical = "${var.elb_backend_latency["critical"]}"
+  }
+
+  notify_no_data      = "${var.elb_config["notify_no_data"]}"
+  evaluation_delay    = "${var.elb_config["delay"]}"
+  renotify_interval   = 60
+  notify_audit        = false
+  timeout_h           = 0
+  include_tags        = true
+  locked              = false
+  require_full_window = true
+  new_host_delay      = "${var.elb_config["delay"]}"
+  no_data_timeframe   = 20
+}
+