This topic is about a person who has been successfully using an irrigation system for their ostomy for several months. However, they recently encountered a problem where, after infusing water, it didn't return as expected, along with the waste. They are trying to figure out why this happened and are looking for advice and insights from others who might have experienced something similar.

Here are some helpful insights and advice:

1. Water Temperature:
- The return flow of water is generally not affected by temperature. If the water is too cool, it might cause cramping but won't stop the return.
- To ensure consistency, consider using a small digital cooking thermometer to check the water temperature before filling the irrigation bag.

2. Ensuring Full Infusion:
- Make sure the entire volume of water is entering the colon. It's normal to have some minor leakage around the cone, so slightly overfilling the bag can help.
- If you usually stand while infusing, try sitting, or vice versa, as your body position can affect the flow.

3. Expect Variability and Keep Experimenting:
- Everyone's routine can vary, and sometimes you might have a session with minimal output even after years of successful irrigation.
- These minor anomalies often resolve on their own, so try to stay calm and continue with your routine.

4. Alternative Equipment Ideas:
- Some people have created DIY systems, like using a portable camping shower reservoir connected to tubing and an anal catheter, which can improve reliability.
- The Braun Irripump is an electric pump that meters water and is available for trial in some countries, though not FDA-approved in the U.S.
- The current Coloplast irrigation set with a built-in temperature indicator works well for most users, but adding a separate thermometer can make temperature checks quicker.

5. General Encouragement:
- Even those who have been irrigating for a long time report occasional unexplained sessions. With persistence and small adjustments, normal results usually return.