diff --git a/spartan/releases/rough-rhino/Earthfile b/spartan/releases/rough-rhino/Earthfile
index ad88113d4f7..3e0da23adfc 100644
--- a/spartan/releases/rough-rhino/Earthfile
+++ b/spartan/releases/rough-rhino/Earthfile
@@ -123,13 +123,41 @@ test-p2p-key:
         echo "✅ P2P private key test passed" || \
         (echo "❌ P2P private key test failed" && exit 1)
 
+test-ethereum-host:
+    FROM +test-setup
+    RUN echo -e "\n\n" | ./aztec-spartan.sh config \
+        -n "troll-turtle" \
+        -e http://foobar:8545 \
+        -p 8080 \
+        -p2p 40400 \
+        -ip 1.2.3.4 \
+        -k 0x00 \
+        -pk 00000
+    RUN test -f .env && \
+        grep -q "ETHEREUM_HOST=http://foobar:8545" .env && \
+        echo "✅ Ethereum host cli test passed" || \
+        (echo "❌ Ethereum host cli test failed" && exit 1)
+
+    # We don't respect the env var here
+    RUN echo -e "\n\n" | ETHEREUM_HOST=http://foobar:8545 ./aztec-spartan.sh config \
+        -n "troll-turtle" \
+        -p 8080 \
+        -p2p 40400 \
+        -ip 1.2.3.4 \
+        -k 0x00 \
+        -pk 00000
+    RUN test -f .env && \
+        grep -q "ETHEREUM_HOST=http://34.19.127.9:8545" .env && \
+        echo "✅ Ethereum host override test passed" || \
+        (echo "❌ Ethereum host override test failed" && exit 1)
+
+
 test-all:
     BUILD +test-help
-    BUILD +test-no-config
     BUILD +test-install
     BUILD +test-docker-check
     BUILD +test-start-stop
     BUILD +test-update
     BUILD +test-data-dir
     BUILD +test-p2p-key
-
+    BUILD +test-ethereum-host
diff --git a/spartan/releases/rough-rhino/aztec-spartan.sh b/spartan/releases/rough-rhino/aztec-spartan.sh
index c7cbe772395..283aeaed7cd 100755
--- a/spartan/releases/rough-rhino/aztec-spartan.sh
+++ b/spartan/releases/rough-rhino/aztec-spartan.sh
@@ -17,6 +17,11 @@ DEFAULT_KEY="0x0000000000000000000000000000000000000000000000000000000000000001"
 DEFAULT_IP=$(curl -s --connect-timeout 5 https://api.ipify.org?format=json | grep -o '"ip":"[^"]*' | cut -d'"' -f4 || echo "")
 DEFAULT_BIND_MOUNT_DIR="$HOME/aztec-data"
 
+# unset these to avoid conflicts with the host's environment
+ETHEREUM_HOST=
+IMAGE=
+BOOTNODE_URL=
+
 
 # Parse command line arguments
 parse_args() {
@@ -168,7 +173,7 @@ configure_environment() {
     if [ "$NETWORK" = "troll-turtle" ]; then
         BOOTNODE_URL="${BOOTNODE_URL:-http://34.82.213.6:8080}"
         ETHEREUM_HOST="${ETHEREUM_HOST:-http://34.19.127.9:8545}"
-        IMAGE="${IMAGE:-aztecprotocol/aztec:0.67.1}"
+        IMAGE="${IMAGE:-aztecprotocol/aztec:troll-turtle}"
     else
         # unknown network
         echo -e "${RED}Unknown network: $NETWORK${NC}"