diff --git a/Tests/test_Trady.cs b/Tests/test_Trady.cs
index 00bacbab..ebf70c4e 100644
--- a/Tests/test_Trady.cs
+++ b/Tests/test_Trady.cs
@@ -11,7 +11,6 @@ public class TradyTests
     private readonly Random rnd;
     private readonly double range;
     private readonly int iterations;
-    private int period;
     private readonly int skip;
     private readonly IEnumerable<IOhlcv> Candles;
 
@@ -39,7 +38,7 @@ public class TradyTests
     {
         for (int run = 0; run < iterations; run++)
         {
-            period = rnd.Next(50) + 5;
+            int period = rnd.Next(50) + 5;
             Sma ma = new(period);
             TSeries QL = new();
             foreach (TBar item in feed)
@@ -69,7 +68,7 @@ public class TradyTests
     {
         for (int run = 0; run < iterations; run++)
         {
-            period = rnd.Next(50) + 5;
+            int period = rnd.Next(50) + 5;
             Ema ma = new(period);
             TSeries QL = new();
             foreach (TBar item in feed)
diff --git a/Tests/test_Tulip.cs b/Tests/test_Tulip.cs
index 4729e61b..174b4046 100644
--- a/Tests/test_Tulip.cs
+++ b/Tests/test_Tulip.cs
@@ -8,7 +8,6 @@ public class TulipTests
     private readonly GbmFeed feed;
     private readonly Random rnd;
     private readonly double range;
-    private int period;
     private readonly int iterations;
     private readonly double[] data;
     private readonly double[] outdata;
@@ -32,7 +31,7 @@ public class TulipTests
     {
         for (int run = 0; run < iterations; run++)
         {
-            period = rnd.Next(50) + 5;
+            int period = rnd.Next(50) + 5;
             Sma ma = new(period);
             TSeries QL = new();
             foreach (TBar item in feed)
@@ -56,8 +55,7 @@ public class TulipTests
     {
         for (int run = 0; run < iterations; run++)
         {
-            period = rnd.Next(50) + 5;
-            period = 20;
+            int period = rnd.Next(30) + 5;
             Ema ma = new(period, useSma: false);
             TSeries QL = new();
             foreach (TBar item in feed)
diff --git a/Tests/test_talib.cs b/Tests/test_talib.cs
index cd073b8e..dcd64c32 100644
--- a/Tests/test_talib.cs
+++ b/Tests/test_talib.cs
@@ -8,8 +8,7 @@ public class TAlibTests
     private readonly GbmFeed feed;
     private readonly Random rnd;
     private readonly double range;
-    private int period;
-    private readonly int iterations;
+        private readonly int iterations;
     private readonly double[] data;
     private readonly double[] TALIB;
 
@@ -32,7 +31,7 @@ public class TAlibTests
     {
         for (int run = 0; run < iterations; run++)
         {
-            period = rnd.Next(50) + 5;
+            int period = rnd.Next(50) + 5;
             Sma ma = new(period);
             TSeries QL = new();
             foreach (TBar item in feed)
@@ -52,7 +51,7 @@ public class TAlibTests
     {
         for (int run = 0; run < iterations; run++)
         {
-            period = rnd.Next(50) + 5;
+            int period = rnd.Next(50) + 5;
             Ema ma = new(period, useSma: true);
             TSeries QL = new();
             foreach (TBar item in feed)
@@ -72,7 +71,7 @@ public class TAlibTests
     {
         for (int run = 0; run < iterations; run++)
         {
-            period = rnd.Next(50) + 5;
+            int period = rnd.Next(50) + 5;
             Dema ma = new(period);
             TSeries QL = new();
             foreach (TBar item in feed)
@@ -92,7 +91,7 @@ public class TAlibTests
     {
         for (int run = 0; run < iterations; run++)
         {
-            period = rnd.Next(50) + 5;
+            int period = rnd.Next(50) + 5;
             Tema ma = new(period);
             TSeries QL = new();
             foreach (TBar item in feed)
@@ -135,7 +134,7 @@ public class TAlibTests
     {
         for (int run = 0; run < iterations; run++)
         {
-            period = rnd.Next(50) + 5;
+            int period = rnd.Next(50) + 5;
             T3 ma = new(period, vfactor: 0.7, useSma: false);
             TSeries QL = new();
             foreach (TBar item in feed)
diff --git a/lib/volatility/Atr.cs b/lib/volatility/Atr.cs
index f3167410..35a67a15 100644
--- a/lib/volatility/Atr.cs
+++ b/lib/volatility/Atr.cs
@@ -19,7 +19,7 @@ public class Atr : AbstractBarBase {
     /// <exception cref="ArgumentOutOfRangeException">
     /// Thrown when period is less than 1.
     /// </exception>
-    public Atr(int period) : base() {
+    public Atr(int period) {
         if (period < 1) {
             throw new ArgumentOutOfRangeException(nameof(period), "Period must be greater than or equal to 1.");
         }
diff --git a/quantower/_IndicatorBase.cs b/quantower/_IndicatorBase.cs
index 043fd9e1..3b0cae62 100644
--- a/quantower/_IndicatorBase.cs
+++ b/quantower/_IndicatorBase.cs
@@ -27,7 +27,7 @@ public abstract class IndicatorBase : Indicator, IWatchlistIndicator
 
     [InputParameter("Show cold values", sortIndex: 20)]
     public bool ShowColdValues { get; set; } = true;
-    public int MinHistoryDepths;
+    public int MinHistoryDepths { get; set; }
 
     // LineSeries.LineSeries(string, Color, int, LineStyle)'
 
@@ -37,7 +37,7 @@ public abstract class IndicatorBase : Indicator, IWatchlistIndicator
 
     int IWatchlistIndicator.MinHistoryDepths => 0;
 
-    protected IndicatorBase() : base()
+    protected IndicatorBase()
     {
         OnBackGround = true;
         SeparateWindow = false;
@@ -45,7 +45,6 @@ public abstract class IndicatorBase : Indicator, IWatchlistIndicator
         Series = new(name: $"{Name}", color: Color.Yellow, width: 2, style: LineStyle.Solid);
 
         AddLineSeries(Series);
-        InitIndicator();
     }
 
     protected virtual void InitIndicator()
@@ -95,7 +94,7 @@ public abstract class IndicatorBase : Indicator, IWatchlistIndicator
     {
         base.OnPaintChart(args);
         List<Point> allPoints = new List<Point>();
-        if (CurrentChart == null) return;
+        if (CurrentChart == null) { return; }
 
         Graphics gr = args.Graphics;
         var mainWindow = this.CurrentChart.Windows[args.WindowIndex];
@@ -126,7 +125,7 @@ public abstract class IndicatorBase : Indicator, IWatchlistIndicator
 
     private void DrawSmoothCombinedCurve(Graphics gr, List<Point> allPoints, int hotCount)
     {
-        if (allPoints.Count < 2) return;
+        if (allPoints.Count < 2) { return; }
 
         using (Pen defaultPen = new(Series!.Color, Series.Width) { DashStyle = ConvertLineStyleToDashStyle(Series.Style) })
         using (Pen coldPen = new(Series!.Color, Series.Width) { DashStyle = DashStyle.Dot })