diff --git a/core/src/main/java/com/volmit/iris/engine/decorator/IrisSeaFloorDecorator.java b/core/src/main/java/com/volmit/iris/engine/decorator/IrisSeaFloorDecorator.java
index 545078ad3..4042a5f63 100644
--- a/core/src/main/java/com/volmit/iris/engine/decorator/IrisSeaFloorDecorator.java
+++ b/core/src/main/java/com/volmit/iris/engine/decorator/IrisSeaFloorDecorator.java
@@ -45,9 +45,11 @@ public class IrisSeaFloorDecorator extends IrisEngineDecorator {
                 }
                 if (height >= 0 || height < getEngine().getHeight()) {
                     if (null != decorator.getBlockDataForTop(biome, getRng(), realX, height, realZ, getData())) {
-                        data.set(x, height, z, decorator.getBlockData100(biome, getRng(), realX, height, realZ, getData()));
-                        height++;
-                        data.set(x, height, z, decorator.getBlockDataForTop(biome, getRng(), realX, height, realZ, getData()));
+                        if (height == getDimension().getFluidHeight() - 1) {
+                            data.set(x, height, z, decorator.getBlockData100(biome, getRng(), realX, height, realZ, getData()));
+                            height++;
+                            data.set(x, height, z, decorator.getBlockDataForTop(biome, getRng(), realX, height, realZ, getData()));
+                        }
                     } else {
                         data.set(x, height, z, decorator.getBlockData100(biome, getRng(), realX, height, realZ, getData()));
                     }