Waterbed tube beds (Somma brand, etc.) have been popular for a long time. Many of the original manufacturers have gone out of business and finding replacement tubes can be difficult. We are friends with one of the best American water mattress manufacturers and he has agreed to custom build any size softside replacement water tube that I need, at a very reasonable cost.
It is very easy to determine the tube size. First lay the tube flat on a table. Then measure the width of the tube as it lay flat. Then measure the total length of the tube. There you go. Give us the measurements and we have have your tubes made for you and shipped within about a week.
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Our water mattress replacement tubes come as full wave or all motion. You can also pay extra to have waveless tubes instead. This will cut down the motion to almost none.
If you ever hear water sloshing around in your tube softside water bed it means that your water tubes have air in them. All you need to do to quiet your bed is to open each water tube and release the gas inside. Keeping the air out of your water mattress tubes will also help keep the water fresher. Please re-seal with both caps, the inner cap and the outer screw on cap.