diff --git a/app/core/vectordb/postgres4langchain.py b/app/core/vectordb/postgres4langchain.py
index 242171f..7ff6fb9 100644
--- a/app/core/vectordb/postgres4langchain.py
+++ b/app/core/vectordb/postgres4langchain.py
@@ -141,6 +141,7 @@ def add_to_collection(self, docs: List[schema.Document], **kwargs) -> None:
                 "SELECT 1 FROM embeddings WHERE source_id = %s", (doc.docId,))
             doc_id_already_exists = cur.fetchone()
             links= ",".join([str(item) for item in doc.links])
+            doc.text = doc.text.replace('\0', '').replace('\x00', '').replace('\n', ' ').replace('\r', ' ').replace('\t', ' ')
             if not doc_id_already_exists:
                 data_list.append(
                     [
@@ -176,31 +177,28 @@ def add_to_collection(self, docs: List[schema.Document], **kwargs) -> None:
                     ),
                 )
             cur.close()
-        try:
-            cur = self.db_conn.cursor()
-            execute_values(
-                cur,
-                "INSERT INTO embeddings (source_id, document, label, media, links, embedding"
-                ") VALUES %s",
-                data_list,
-            )
-            self.db_conn.commit()
+        cur = self.db_conn.cursor()
+        execute_values(
+            cur,
+            "INSERT INTO embeddings (source_id, document, label, media, links, embedding"
+            ") VALUES %s",
+            data_list,
+        )
+        self.db_conn.commit()
 
-            # create index
-            cur.execute("SELECT COUNT(*) as cnt FROM embeddings;")
-            num_records = cur.fetchone()[0]
-            num_lists = num_records / 1000
-            num_lists = max(10, num_lists, math.sqrt(num_records))
-            # use the cosine distance measure, which is what we'll later use for querying
-            cur.execute(
-                "CREATE INDEX ON embeddings USING ivfflat (embedding vector_cosine_ops) "
-                + f"WITH (lists = {num_lists});"
-            )
-            self.db_conn.commit()
+        # create index
+        cur.execute("SELECT COUNT(*) as cnt FROM embeddings;")
+        num_records = cur.fetchone()[0]
+        num_lists = num_records / 1000
+        num_lists = max(10, num_lists, math.sqrt(num_records))
+        # use the cosine distance measure, which is what we'll later use for querying
+        cur.execute(
+            "CREATE INDEX ON embeddings USING ivfflat (embedding vector_cosine_ops) "
+            + f"WITH (lists = {num_lists});"
+        )
+        self.db_conn.commit()
 
-            cur.close()
-        except Exception as exe:
-            raise PostgresException("While adding data: " + str(exe)) from exe
+        cur.close()
 
     def _get_relevant_documents(
         self, query: list, run_manager: CallbackManagerForRetrieverRun| None = None, **kwargs
diff --git a/app/templates/chat-demo-postgres.html b/app/templates/chat-demo-postgres.html
index 0afa2d1..d500a42 100644
--- a/app/templates/chat-demo-postgres.html
+++ b/app/templates/chat-demo-postgres.html
@@ -67,6 +67,18 @@ <h1 class="font-bold mb-4">assistant.bible</h1></a
               >Faith and Farming</label
             >
           </div>
+          <div class="flex items-center">
+            <input
+              type="checkbox"
+              id="aqua-docs"
+              name="aqua-docs"
+              value="aqua_docs"
+              onchange="changeLabel(this)"
+            />
+            <label for="aqua-docs" class="ml-2"
+              >AQuA Docs</label
+            >
+          </div>
         </div>
         <div class="w-full md:w-auto mt-4 md:mt-0">
           <a