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Dual Galaxy 4 Replacement Bladder

Quick Overview

The Boyd Flotation Dual Galaxy 4 replacement waterbed mattress bladder will fit inside an 8" deep fill softside waterbed mattress. You can control the fill level of each side of the mattress independently. Polyester fiber layers provide stability and reduce motion. Three additional layers of fiber in the lumbar area provides extra support.

only $275.00 all sizes


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A Dual Galaxy 4 replacement waterbed mattress bladder will fit inside your existing 8" deep fill softside waterbed foam cavity. Dual bladders allow for adjustable firmness for each side of the bed. You can control the fill level of each side of the mattress independently, allowing you and your partner to choose your own preferred comfort level, from plush to firm, by filling with more or less water. Four layers of polyester fiber reduces motion. Three additional layers of fiber in the lumbar area provides extra support where you need it most. If you suffer from back pain, you will appreciate the added lumbar support.

We recommend that when you purchase your new softside waterbed mattress bladder that you add Blue Magic Waterbed Conditioner at the time of filling. By properly conditioning your waterbed mattress each year you protect the vinyl, fiber and foam. Waterbed Conditioner also controls odor causing gases and slime forming bacteria.

  • Fits 8" deep fill slant wall foam tub
  • Provides stability and contouring support
  • Allows for separate adjustable firmness levels on each side of the bed
  • 4 layers of polyester fiber reduces motion
  • 3 additional layers of lumbar fiber
  • 4-point tethering system
  • Add waterbed conditioner at time of filling, and once per year thereafter
  • 4 year full, 11 year prorated warranty

Customer Reviews

7 Review(s)

per page
Super Awesome Review by Leesbby
As soon as I opened the box I knew first hand that I made the right decision in purchasing this product, it’s comfortable, super soft, motionless and absolutely wonderful. I have a total right hip replacement and this dual motionless mattresses are the best. I will continue to purchase this product and more from this company, they are honest and fast in shipping your product to you. (Posted on 7/17/2019)
Good but not as good as original Review by Dave I.
No communication from supplier as to when it would or was shipping. Did not appear to have as much bladder fill as the original. I feel like they saved a few dollars and put less foam in .I do not have the data to back it up however lifting the new ones into place and disposing of the old (dry after 3 weeks) the new ones felt lighter. (Posted on 4/26/2018)
Fiber in bladder bunched into piles. Review by CJM
We've used this specific flotation system for 13 years. For 10 years, it worked great. Then we moved and the bladders burst. So we bought new Galaxy IV bladders 3 years ago. Both bladders' waveless fiber has broken up and piled into a ball. Although once good, the current quality of this product doesn't warrant purchase. (Posted on 2/26/2018)
Good overall Review by Bob
Other than receiving the wrong bladder initially and, hence, having to call for an RMA, this was a good transaction. The same thing happened a few years ago when I ordered from Boyd. Otherwise, very good. (Posted on 8/21/2017)
Boyd to the rescus Review by tron
Was told by local mattress stores water beds no longer sold. went on line found Boyd web site.Boyd fulfilled my needs
Thank you (Posted on 3/9/2017)
Best bed ever Review by Cindy
I've been sleeping on a water bed since I've been 18 years old. I am now 51. This is by far the best waterbed mattress I've ever slept on. The fact that there is no weight transfer because of the dual bladder is absolutely excellent. And the fact that it has extra wave support is even better. Literally the best mattress I have ever had. (Posted on 8/31/2016)
Happy customer Review by Randy
The shipping was quick and the people I talked with answered all my questions. (Posted on 8/29/2016)

7 Review(s)

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