Hello CactusJack.
I could not get on with the irypump because it did not hold enough water for my needs, so I made my own.
My first effort was to adapt a portable camping shower, which worked well for a year or so and then simply packed up. I looked it up in the 'stars' section on the internet and lots of people only got a few days use out of them - so I scrapped that idea.
Next, I used an adapted 'Killerspray' garden spray pump, which worked well, except that it had a relatively narrow filling opening. I wanted something that I could take abroad and fill with gear when it was empty. Hence I found a 3litre container+manual pump in the local garden centre, which was ideal for both irrigation and carrying stoma gear.
At first, I cut off the thermostat from the plastic hanging bags and stuck it on the side of the pump so that the water was the right temperature. However, I quickly found that I could judge the temperature without that addition.
Also, I do not use the cones as they do not work for me, so I have adapted an anal irrigation catheter but still use the Coloplast valve and tubing. (This anal catheter method can be 'risky', so if you choose this route be very careful).
I've been using this system for about 10 years and it has served me well.
I hope this is helpful to you.
Best wishes
Bill