diff --git a/components/ExperimentForm.tsx b/components/ExperimentForm.tsx
index ba564d9..730b2a7 100644
--- a/components/ExperimentForm.tsx
+++ b/components/ExperimentForm.tsx
@@ -66,7 +66,16 @@ const ExperimentForm: React.FC<ExperimentFormProps> = ({
 
     setLoading(true);
     try {
-      await createExperiment(formData);
+      // Sanitize optional fields
+      const submissionData = {
+        ...formData,
+        end_date: formData.end_date || undefined,
+        description: formData.description || undefined,
+        hypothesis: formData.hypothesis || undefined,
+        owner: formData.owner || undefined,
+      };
+
+      await createExperiment(submissionData);
       onSuccess();
       onClose();
     } catch (error: any) {
@@ -174,8 +183,8 @@ const ExperimentForm: React.FC<ExperimentFormProps> = ({
                   setSelectedLine('');
                 }}
                 className={`flex-1 px-3 py-2 rounded-lg text-xs font-bold border transition-all ${targetType === 'asin'
-                    ? 'bg-indigo-600/20 border-indigo-500 text-indigo-400'
-                    : 'bg-slate-800 border-slate-600 text-slate-400 hover:border-slate-500'
+                  ? 'bg-indigo-600/20 border-indigo-500 text-indigo-400'
+                  : 'bg-slate-800 border-slate-600 text-slate-400 hover:border-slate-500'
                   }`}
               >
                 🎯 Specific ASINs
@@ -188,8 +197,8 @@ const ExperimentForm: React.FC<ExperimentFormProps> = ({
                   setAsinInput('');
                 }}
                 className={`flex-1 px-3 py-2 rounded-lg text-xs font-bold border transition-all ${targetType === 'line'
-                    ? 'bg-indigo-600/20 border-indigo-500 text-indigo-400'
-                    : 'bg-slate-800 border-slate-600 text-slate-400 hover:border-slate-500'
+                  ? 'bg-indigo-600/20 border-indigo-500 text-indigo-400'
+                  : 'bg-slate-800 border-slate-600 text-slate-400 hover:border-slate-500'
                   }`}
               >
                 📦 Entire Product Line