diff --git a/README.md b/README.md
index 4ad09f6..3474d2a 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,7 @@ distribute traffic more evenly across all instances and avoid performance
 bottlenecks and rate-limiting.
 
 ## Heroku deploy
-To load  custom services, you must paste a base64 encoded string into the FARSIDE_SERVICES_JSON field
+To load  custom services, you must paste a base64 encoded json into the FARSIDE_SERVICES_JSON_DATA field
 you can encode your json at https://www.base64encode.org
 
 ## Standalone
@@ -143,3 +143,4 @@ goes against what Farside is trying to solve. Use at your own discretion.
 | FARSIDE_TEST | If enabled, bypasses the instance availability check and adds all instances to the pool. |
 | FARSIDE_PORT | The port to run Farside on (default: `4001`) |
 | FARSIDE_SERVICES_JSON | The "services" JSON file to use for selecting instances (default: `services.json`) |
+| FARSIDE_SERVICES_JSON_DATA | The "services" JSON file to use for selecting instances base64 encoded |
diff --git a/lib/farside/application.ex b/lib/farside/application.ex
index b32bfac..db7f894 100644
--- a/lib/farside/application.ex
+++ b/lib/farside/application.ex
@@ -74,12 +74,13 @@ defmodule Farside.Application do
         end
 
       struct(%Service{}, service_atom)
-      |> Http.fetch_instances()
       |> Farside.Instance.Supervisor.start()
+      |> Farside.Instances.sync()
     end
 
     LastUpdated.value(DateTime.utc_now())
 
     response
   end
+
 end
diff --git a/lib/farside/instance.ex b/lib/farside/instance.ex
index 9f69e42..498d9af 100644
--- a/lib/farside/instance.ex
+++ b/lib/farside/instance.ex
@@ -26,7 +26,7 @@ defmodule Farside.Instance do
         write_concurrency: true
       ])
 
-    :ets.insert(ref, {:data, init_arg})
+    :ets.insert(ref, {:default, init_arg})
 
     {:ok, %{type: init_arg.type, ref: ref}}
   end
@@ -59,13 +59,13 @@ defmodule Farside.Instance do
         :update,
         state
       ) do
-    service = :ets.lookup(String.to_atom(state.type), :data)
+    service = :ets.lookup(String.to_atom(state.type), :default)
 
     {_, service} = List.first(service)
 
     service = Http.fetch_instances(service)
 
-    :ets.delete_all_objects(String.to_atom(state.type))
+    :ets.delete(String.to_atom(state.type), :data)
 
     :ets.insert(state.ref, {:data, service})
 
diff --git a/lib/farside/instances.ex b/lib/farside/instances.ex
index f615707..b889cf5 100644
--- a/lib/farside/instances.ex
+++ b/lib/farside/instances.ex
@@ -1,7 +1,7 @@
 defmodule Farside.Instances do
   alias Farside.LastUpdated
 
-  def sync() do
+  def sync(data \\ []) do
     update_file = Application.fetch_env!(:farside, :update_file)
     update_json = update_file <> ".json"