diff --git a/README.md b/README.md
index 495a953..70bb7fc 100644
--- a/README.md
+++ b/README.md
@@ -417,13 +417,13 @@ stern statefulset/graylog-datanode -n graylog-helm-dev-1
 ---
 
 # Graylog Helm Chart Values Reference
-| Key Path           | Description                                                      | Default   |
-|--------------------|------------------------------------------------------------------| --------- |
-| `size`             | Preset cluster size (optional).                                  | `""`      |
-| `provider`         | Kubernetes provider (optional).                                  | `""`      |
-| `version`          | Override Graylog and Graylog Data Node version (optional).       | `""`      |
-| `nameOverride`     | Override the `app.kubernetes.io/name` label value (optional).    | `""`      |
-| `fullnameOverride` | Override the fully qualified name of the application (optional). | `""`      |
+| Key Path           | Description                                                                                      | Default   |
+|--------------------|--------------------------------------------------------------------------------------------------| --------- |
+| `provider`         | Kubernetes provider (optional).                                                                  | `""`      |
+| `version`          | Override Graylog and Graylog Data Node version (optional).                                       | `""`      |
+| `sizeOverride`     | Override Graylog and Graylog Data Node replicas and resource requests using a preset (optional). | `""`      |
+| `nameOverride`     | Override the `app.kubernetes.io/name` label value (optional).                                    | `""`      |
+| `fullnameOverride` | Override the fully qualified name of the application (optional).                                 | `""`      |
 
 ## Global
 These values affect Graylog, DataNode, and MongoDB
diff --git a/graylog/templates/_helpers.tpl b/graylog/templates/_helpers.tpl
index 1dcf89c..4cb42c0 100644
--- a/graylog/templates/_helpers.tpl
+++ b/graylog/templates/_helpers.tpl
@@ -76,7 +76,10 @@ usage: (list <size preset key> <size field to index> . | list "graylog" | includ
 {{- $dictName  := index . 0 }}
 {{- $args := index . 1 | initial }}
 {{- $ctx := index . 1 | last }}
-{{- $sizeKey   := index $args 0 | default "default" }}
+{{- $sizeKey   := index $args 0 }}
+{{- if empty $sizeKey }}
+{{- int 0 }}
+{{- else }}
 {{- $fieldToIndex := index $args 1 | required "please request a valid size field: replicas, cpu, memory" }}
 {{- if hasKey $defaults $dictName | not }}
   {{- fail "presets are only available for 'graylog' and 'datanode'" }}
@@ -86,6 +89,7 @@ usage: (list <size preset key> <size field to index> . | list "graylog" | includ
 {{- $values := dig "size" $sizeKey $dictName $default $presets }}
 {{- index $indices $fieldToIndex | index $values }}
 {{- end }}
+{{- end }}
 
 {{/*
 Graylog size presets
@@ -111,14 +115,14 @@ usage: (list $key <field> . | include "datanode.presets.size")
 Graylog replicas
 */}}
 {{- define "graylog.replicas" }}
-{{- .Values.graylog.replicas | default (list .Values.size "replicas" . | include "graylog.presets.size") | default 2 }}
+{{- coalesce (list .Values.sizeOverride "replicas" . | include "graylog.presets.size" | int) .Values.graylog.replicas | default 2 | int }}
 {{- end }}
 
 {{/*
 Datanode replicas
 */}}
 {{- define "graylog.datanode.replicas" }}
-{{- .Values.datanode.replicas | default (list .Values.size "replicas" . | include "graylog.datanode.presets.size") | default 3 }}
+{{- coalesce (list .Values.sizeOverride "replicas" . | include "graylog.datanode.presets.size" | int) .Values.datanode.replicas | default 3 | int }}
 {{- end }}
 
 {{/*
diff --git a/graylog/values.schema.json b/graylog/values.schema.json
index 95fd6aa..7304d59 100644
--- a/graylog/values.schema.json
+++ b/graylog/values.schema.json
@@ -4,32 +4,32 @@
   "type": "object",
   "required": [],
   "properties": {
-    "size": {
+    "provider": {
       "type": "string",
-      "description": "Preset cluster size (optional)",
+      "description": "Kubernetes provider (optional)",
       "oneOf": [
         {
           "type": "string",
-          "enum": [ "xs", "small", "medium", "large", "xl", "xxl", "default", "poc", "" ]
+          "enum": [ "aws", "aws-managed-sc", "azure", "gcp", "microk8s", "" ]
         },
         { "type": "null" }
       ]
     },
-    "provider": {
+    "version": {
       "type": "string",
-      "description": "Kubernetes provider (optional)",
+      "description": "Override Graylog and Graylog Data Node version (optional)"
+    },
+    "sizeOverride": {
+      "type": "string",
+      "description": "Override the preset cluster size (optional)",
       "oneOf": [
         {
           "type": "string",
-          "enum": [ "aws", "aws-managed-sc", "azure", "gcp", "microk8s", "" ]
+          "enum": [ "xs", "small", "medium", "large", "xl", "xxl", "default", "poc", "" ]
         },
         { "type": "null" }
       ]
     },
-    "version": {
-      "type": "string",
-      "description": "Override Graylog and Graylog Data Node version (optional)"
-    },
     "nameOverride": {
       "type": "string",
       "description": "Override the name of the chart. Affects app.kubernetes.io/name annotation"
diff --git a/graylog/values.yaml b/graylog/values.yaml
index 28a29c5..7ec6443 100644
--- a/graylog/values.yaml
+++ b/graylog/values.yaml
@@ -1,14 +1,14 @@
 # Default values for Graylog.
 
-# Preset cluster size (optional)
-size: ""
-
 # Kubernetes provider (optional)
 provider: ""
 
 # Override Graylog and Graylog Data Node version (optional)
 version: ""
 
+# Override the preset cluster size (optional)
+sizeOverride: ""
+
 # Override the chart name (optional)
 nameOverride: ""