Why stone stability matters
Hardscape stacks should remain stable during routine maintenance and should not leave a heavy piece resting on loose substrate. In a shrimp-focused aquarium, the choice should also support steady routines, visible livestock, and access for basic care.
Before you act, check whether each piece has broad contact and whether a bump could shift the stack. Compare the item with the rest of the setup and note any recent change that could affect what you are seeing.
A careful way to proceed
place large stones first on a stable base and test gently before planting around them. Make one adjustment at a time and watch how the aquarium responds during normal observation.
Avoid relying on a narrow balance point near the aquarium glass. Labels, products, and tank conditions differ, so use a reliable guide as context and record what you directly observe. If uncertainty remains, ask an experienced shrimp keeper before making a consequential change.
Use these as general hobby references. Test your aquarium and confirm product guidance before making changes.