diff --git a/templates/prometheusRule-ceph.yaml b/templates/prometheusRule-ceph.yaml
index 61c279b..e6a9a28 100644
--- a/templates/prometheusRule-ceph.yaml
+++ b/templates/prometheusRule-ceph.yaml
@@ -257,10 +257,25 @@ spec:
           description: "OSD {{ `{{` }} $labels.ceph_daemon }} on {{ `{{` }} $labels.hostname }} deviates by more than 30% from average PG count."
           summary: "PGs are not balanced across OSDs"
         expr: |
-          abs(
-            ((ceph_osd_numpg > 0) - on (job) group_left avg(ceph_osd_numpg > 0) by (job)) /
-            on (job) group_left avg(ceph_osd_numpg > 0) by (job)
-          ) * on (ceph_daemon) group_left(hostname) ceph_osd_metadata > 0.30
+          # abs(
+          #   ((ceph_osd_numpg > 0) - on (job) group_left avg(ceph_osd_numpg > 0) by (job)) /
+          #   on (job) group_left avg(ceph_osd_numpg > 0) by (hostname)
+          # ) * on (ceph_daemon) group_left(hostname) ceph_osd_metadata > 0.30
+          (sum by(hostname) ((ceph_osd_numpg > 0) * on(ceph_daemon) group_left(hostname) ceph_osd_metadata)) 
+            < 
+          scalar(
+            (avg by (job) (sum by(hostname) ((ceph_osd_numpg > 0) * on(ceph_daemon) group_left(hostname) ceph_osd_metadata))
+              - 
+            (avg by (job) (sum by(hostname) ((ceph_osd_numpg > 0) * on(ceph_daemon) group_left(hostname) ceph_osd_metadata)) * 0.3 ))
+          )
+            or
+          (sum by(hostname) ((ceph_osd_numpg > 0) * on(ceph_daemon) group_left(hostname) ceph_osd_metadata))
+          >
+          scalar(
+            (avg by (job) (sum by(hostname) ((ceph_osd_numpg > 0) * on(ceph_daemon) group_left(hostname) ceph_osd_metadata))
+              +
+            (avg by (job) (sum by(hostname) ((ceph_osd_numpg > 0) * on(ceph_daemon) group_left(hostname) ceph_osd_metadata)) * 0.3 ))
+          )
         for: "5m"
         labels:
           oid: "1.3.6.1.4.1.50495.1.2.1.4.5"