diff --git a/src/strategy_team/future_strategy_long.rs b/src/strategy_team/future_strategy_long.rs
index 7ecb868..2f335d0 100644
--- a/src/strategy_team/future_strategy_long.rs
+++ b/src/strategy_team/future_strategy_long.rs
@@ -90,8 +90,8 @@ pub async fn list_up_for_buy(
     // Heatmap volume: filtering close price with Extra High is over the previous candle from 30 previous candles
     let mut keys_to_remove: HashSet<String> = HashSet::new();
     let heatmap_volumes = heatmap_volume(
-        60,
-        60,
+        30,
+        30,
         4.0,
         1.5,
         0.5,
diff --git a/src/strategy_team/future_strategy_short.rs b/src/strategy_team/future_strategy_short.rs
index e8623da..31bd5c9 100644
--- a/src/strategy_team/future_strategy_short.rs
+++ b/src/strategy_team/future_strategy_short.rs
@@ -90,8 +90,8 @@ pub async fn list_up_for_buy(
     // Heatmap volume: filtering close price with Extra High is over the previous candle from 30 previous candles
     let mut keys_to_remove: HashSet<String> = HashSet::new();
     let heatmap_volumes = heatmap_volume(
-        60,
-        60,
+        30,
+        30,
         4.0,
         1.5,
         0.5,