This topic is about finding a leak-proof ostomy bag for someone who developed a parastomal hernia after having their lower bowel and rectum removed. They are having trouble with leaks and are looking for advice on whether the opening in the wafer should fit tightly against the stoma. Here are some helpful tips and suggestions:

1. Consider Coloplast options:
- The SenSura Mio Convex Flip has a star-shaped barrier designed for stomas on a bulge or hernia.
- Pair it with the SenSura Mio Click Drainable Pouch.
- Use Brava Elastic Barrier Strips, which are curved flange extenders, to hold the edges down more securely than regular tape.
- Try the Brava Protective Seal, a sealing washer or barrier ring, and the Brava Lubricating Deodorant for inside the pouch.
- The SenSura Mio Belt can help keep the appliance snug. You can contact Coloplast for free samples.

2. Use barrier rings or sealing washers:
- Cut the wafer hole slightly larger than the stoma and fill the gap with a sealing washer or barrier ring to prevent rubbing and soreness.
- Salts Healthcare in the UK offers rings and other products; you can reach out to them for samples.
- If the Brava ring swells too much, many users prefer the Salts barrier ring as an alternative.

3. Try flange extenders:
- Commercial flange extenders can replace the surgical tape you are using and provide longer-lasting edge security.

4. Wear hernia support belts:
- A dedicated hernia support belt can help minimize further hernia growth and keep the pouch sealed.
- Recommended brands include Nu-Hope hernia support belts and the Coloplast SenSura Mio Belt.

5. Adjust the cutting/fit of the wafer opening:
- Avoid cutting the opening too tight, as the stoma moves, and a snug fit can cause irritation.
- Since your stoma is well healed, you might consider pre-cut barriers that offer a consistent, slightly loose fit.

6. Explore different appliance styles:
- Some people successfully use a flat 1-piece pouch even with a hernia, so it might be worth sampling different styles to find what adheres best for you.