diff --git a/docker/sparkl2/Dockerfile b/docker/sparkl2/Dockerfile
index 7bf785c43..f09ecf4da 100644
--- a/docker/sparkl2/Dockerfile
+++ b/docker/sparkl2/Dockerfile
@@ -19,13 +19,16 @@ RUN uv sync --all-extras
 ENV LNBITS_PORT="5000"
 ENV LNBITS_HOST="0.0.0.0"
 ENV LNBITS_BACKEND_WALLET_CLASS="SparkL2Wallet"
+ENV LNBITS_RESERVE_FEE_MIN="20000"
+ENV LNBITS_RESERVE_FEE_PERCENT="1"
+ENV LNBITS_FUNDING_SOURCE_PAY_INVOICE_WAIT_SECONDS="20"
 ENV FUNDING_SOURCE_MAX_RETRIES=10
 
 # spark sidecar
-ENV SPARK_MNEMONIC="bottom bottom bottom bottom bottom bottom bottom bottom bottom bottom bottom bottom"
 ENV SPARK_NETWORK="MAINNET"
 ENV SPARK_SIDECAR_PORT="8765"
 ENV SPARK_PAY_WAIT_MS="20000"
+ENV SPARK_MULTIPLICITY="3"
 
 EXPOSE 5000