diff --git a/tests/graphnet_sandbox/approx8.net b/tests/graphnet_sandbox/approx8.net
index e69de29b..995adb66 100644
--- a/tests/graphnet_sandbox/approx8.net
+++ b/tests/graphnet_sandbox/approx8.net
@@ -0,0 +1,26 @@
+# Reaction network definition for the approx8 network.
+# This file lists the reactions to be included for a direct
+# comparison with the hard-coded approx8 network.
+
+# --- PP Chain ---
+p(p,e+)d
+d(p,g)he3
+he3(he3,2p)he4
+
+# --- CNO Cycle ---
+# Note: approx8 simplifies the CNO cycle using branching fractions,
+# but these are the primary gateway reactions.
+c12(p,g)n13
+n14(p,g)o15
+n14(a,g)f18
+o16(p,g)f17
+
+# --- Alpha Captures & Triple Alpha ---
+c12(a,g)o16
+n14(a,g)f18
+o16(a,g)ne20
+ne20(a,g)mg24
+
+# --- Carbon & Oxygen Burning ---
+c12(c12,a)ne20
+o16(c12,a)mg24
\ No newline at end of file
diff --git a/tests/graphnet_sandbox/main.cpp b/tests/graphnet_sandbox/main.cpp
index 3b4c035b..1b8e1858 100644
--- a/tests/graphnet_sandbox/main.cpp
+++ b/tests/graphnet_sandbox/main.cpp
@@ -3,7 +3,9 @@
 
 #include "gridfire/engine/engine_graph.h"
 #include "gridfire/engine/engine_approx8.h"
-#include "gridfire/engine/engine_adaptive.h"
+#include "gridfire/engine/views/engine_adaptive.h"
+#include "gridfire/engine/views/engine_defined.h"
+#include "gridfire/io/network_file.h"
 
 #include "gridfire/solver/solver.h"
 
@@ -39,7 +41,7 @@ void quill_terminate_handler()
 int main() {
     g_previousHandler = std::set_terminate(quill_terminate_handler);
     quill::Logger* logger = fourdst::logging::LogManager::getInstance().getLogger("log");
-    logger->set_log_level(quill::LogLevel::TraceL1);
+    logger->set_log_level(quill::LogLevel::Debug);
     LOG_DEBUG(logger, "Starting Adaptive Engine View Example...");
 
     using namespace gridfire;
@@ -62,16 +64,22 @@ int main() {
     netIn.dt0 = 1e12;
 
     NetOut netOut;
+
+    netIn.dt0 = 1e12;
     // approx8::Approx8Network approx8Network;
     // netOut = approx8Network.evaluate(netIn);
-    // std::cout << "Approx8 Network Output: " << netOut << std::endl;
+    // std::cout << "Approx8 Network H-1: " << netOut.composition.getMassFraction("H-1") << " in " << netOut.num_steps << " steps." << std::endl;
+
 
     netIn.dt0 = 1e-15;
 
     GraphEngine ReaclibEngine(composition);
-    AdaptiveEngineView adaptiveEngine(ReaclibEngine);
-    solver::QSENetworkSolver solver(adaptiveEngine);
+    // AdaptiveEngineView adaptiveEngine(ReaclibEngine);
+    io::SimpleReactionListFileParser parser{};
+    FileDefinedEngineView approx8EngineView(ReaclibEngine, "approx8.net", parser);
+    approx8EngineView.setScreeningModel(screening::ScreeningType::WEAK);
+    solver::QSENetworkSolver solver(approx8EngineView);
 
     netOut = solver.evaluate(netIn);
-    std::cout << "QSE Graph Network Output: " << netOut << std::endl;
+    std::cout << "QSE Graph Network H-1: " << netOut.composition.getMassFraction("H-1") << " in " << netOut.num_steps << " steps." << std::endl;
 }
\ No newline at end of file