diff --git a/light9/effect/sequencer/eval_faders.py b/light9/effect/sequencer/eval_faders.py
--- a/light9/effect/sequencer/eval_faders.py
+++ b/light9/effect/sequencer/eval_faders.py
@@ -4,22 +4,21 @@ from dataclasses import dataclass
 from typing import List, Optional, cast
 
 from prometheus_client import Summary
-from light9.effect.effect_function_library import EffectFunctionLibrary
-from light9.effect.effecteval2 import EffectEval2
-
 from rdfdb import SyncedGraph
 from rdflib import URIRef
 from rdflib.term import Node
 
+from light9.effect.effect_function_library import EffectFunctionLibrary
+from light9.effect.effecteval2 import EffectEval2
 from light9.effect.settings import DeviceSettings, EffectSettings
-from light9.metrics import metrics
 from light9.namespaces import L9, RDF
 from light9.newtypes import EffectAttr, EffectUri, UnixTime
 from light9.typedgraph import typedValue
 
 log = logging.getLogger('seq.fader')
 
-COMPILE=Summary('compile_graph_fader', '')
+COMPILE = Summary('compile_graph_fader', '')
+
 
 @dataclass
 class Fader:
@@ -29,19 +28,18 @@ class Fader:
     effect: EffectUri
     setEffectAttr: EffectAttr
 
-    value: Optional[float]=None # mutable
+    value: Optional[float] = None  # mutable
 
     def __post_init__(self):
         self.ee = EffectEval2(self.graph, self.effect, self.lib)
 
+
 class FaderEval:
     """peer to Sequencer, but this one takes the current :Fader settings -> sendToCollector
 
     """
-    def __init__(self,
-                 graph: SyncedGraph,
-                 lib: EffectFunctionLibrary
-                 ):
+
+    def __init__(self, graph: SyncedGraph, lib: EffectFunctionLibrary):
         self.graph = graph
         self.lib = lib
         self.faders: List[Fader] = []
@@ -56,12 +54,12 @@ class FaderEval:
         for fader in self.graph.subjects(RDF.type, L9['Fader']):
             effect = typedValue(EffectUri, self.graph, fader, L9['effect'])
             setting = typedValue(Node, self.graph, fader, L9['setting'])
-            setAttr = typedValue(EffectAttr,  self.graph, setting, L9['effectAttr'])
+            setAttr = typedValue(EffectAttr, self.graph, setting, L9['effectAttr'])
             self.faders.append(Fader(self.graph, self.lib, cast(URIRef, fader), effect, setAttr))
 
         # this could go in a second, smaller addHandler call to avoid rebuilding Fader objs constantly
         for f in self.faders:
-            setting = typedValue(Node, self.graph, f.uri, L9['setting'])            
+            setting = typedValue(Node, self.graph, f.uri, L9['setting'])
             f.value = typedValue(float, self.graph, setting, L9['value'])
 
     def computeOutput(self) -> DeviceSettings: