diff --git a/src/Updux.ts b/src/Updux.ts
index 6063217..8045e73 100644
--- a/src/Updux.ts
+++ b/src/Updux.ts
@@ -6,6 +6,7 @@ import {
     Action,
     MiddlewareAPI,
     AnyAction,
+    Middleware,
 } from 'redux';
 import {
     configureStore,
@@ -88,7 +89,7 @@ export default class Updux<
     >;
     #selectors: any;
 
-    #effects: any[] = [];
+    #localEffects: Middleware[] = [];
 
     constructor(
         config: Partial<{
@@ -128,19 +129,42 @@ export default class Updux<
         return this.#initial;
     }
 
+    get effects() {
+        return [
+            ...this.#localEffects,
+            ...Object.entries(this.#subduxes).flatMap(
+                ([slice, { effects }]) => {
+                    if (!effects) return [];
+                    return effects.map(effect => (api) => effect({
+                        ...api,
+                        getState: () => api.getState()[slice],
+                    }))
+                }
+            )
+        ]
+    }
+
     createStore(
         options: Partial<{
             initial: T_LocalState;
         }> = {},
     ) {
         const preloadedState: any = options.initial ?? this.initial;
+
+        const effects = buildEffectsMiddleware(
+            this.effects,
+            this.actions,
+            this.selectors,
+        );
+
+
         const store = configureStore({
             reducer: ((state) => state) as Reducer<
                 AggregateState<T_LocalState, T_Subduxes>,
                 AnyAction
             >,
             preloadedState,
-            middleware: [this.effectsMiddleware],
+            middleware: [effects],
         });
 
         const dispatch: any = store.dispatch;
@@ -221,11 +245,7 @@ export default class Updux<
     }
 
     addEffect(effect: EffectMiddleware) {
-        this.#effects.push(effect);
-    }
-
-    get effects() {
-        return this.#effects;
+        this.#localEffects.push(effect);
     }
 
     get effectsMiddleware() {
diff --git a/src/effects.test.ts b/src/effects.test.ts
index 906d83b..f500cae 100644
--- a/src/effects.test.ts
+++ b/src/effects.test.ts
@@ -75,5 +75,36 @@ test('basic', () => {
     expect(seen).toEqual(1);
 });
 
+test('subdux', () => {
+    const bar = new Updux({
+        initial: 'bar state',
+        actions: { foo: 0 },
+    });
+
+    let seen = 0;
+    bar.addEffect((api) => next => action => {
+        seen++;
+        expect(api.getState()).toBe('bar state');
+        next(action);
+    });
+
+    const dux = new Updux({
+        initial: {
+            loaded: true,
+        },
+        subduxes: {
+            bar
+        },
+    });
+
+    const store = dux.createStore();
+
+    expect(seen).toEqual(0);
+
+    store.dispatch.foo();
+
+    expect(seen).toEqual(1);
+});
+
 // TODO subdux effects
 // TODO allow to subscribe / unsubscribe effects?
diff --git a/src/types.ts b/src/types.ts
index cca0034..2420635 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -1,4 +1,4 @@
-import { Action, ActionCreator, Reducer } from 'redux';
+import { Action, ActionCreator, Middleware, Reducer } from 'redux';
 
 export type Dux<
     STATE = any,
@@ -11,6 +11,7 @@ export type Dux<
         state: STATE,
         action: ReturnType<ACTIONS[keyof ACTIONS]>,
     ) => STATE;
+    effects: Middleware[];
 }>;
 
 type ActionsOf<DUX> = DUX extends { actions: infer A } ? A : {};