Hi rockscreation,
[quote]I think there might have been a misunderstanding in what I mentioned before.
When I was referring to the base, I meant frame. I bought 2 twin XL adjustable bases-frames for a great price of $500. They were new in the box factory seconds, but I’ve yet to find any imperfections. www.samsclub.com/sams/motionessentials-a...tion/prod10221236.ip
These bases are normally around $700 a piece.[/quote]
I did understand what you meant. Any mattress that uses materials and components that are flexible enough to conform to the movements of your adjustable bed (which would include most latex, polyfoam, or memory foam mattresses and many pocket coil mattresses as well) would generally work well on an adjustable bed. Elevating the head of the adjustable bed can also be very helpful with acid reflux issues as well. It sounds like the adjustable bed you purchased was a great price and a good value choice. In very general terms … I would use about 12" as a maximum mattress thickness for a mattress that is being used on an adjustable bed because it may not conform as well if it’s thicker than this.
A minimal amount of visible impressions would be normal but if the impressions are more “virtual” and are mostly noticeable when you sleep on the mattress and aren’t visible when you aren’t on the mattress (or are only minimal) then it usually means that the comfort choice you made was on the edge of being too soft for you and that even a relatively small amount of initial foam softening under the heavier parts of your body was enough to put you outside the comfort/support range that is suitable for you (see post #2 here).
If the visible impressions are deeper than 1.5" (you can measure them with a string or a straight edge across the impression) then it’s also possible that the materials in your mattress were defective and you would have a warranty issue as well.
[quote]Anyway, when I picked up the bases I asked if they had any latex mattress seconds. To my surprise they did. There was one plush king latex mattress that was missing a tag. I figured it would at least give me something else to work with. Come to find out, it’s a PranaSleep mattress. It’s this model www.pranasleep.com/sub-collection.asp?collectionID=45&sizeID=4
Apparently this mattress costs $6150 when purchased directly from PranaSleep’s website. I only paid this mattress store $100 for it.
I have now performed surgery on it. I found it to be too plush. I removed the pillow top and cut it into 2x-Twin XL mattresses. With the pillow top removed, the feel is much better. The support seems much better as well. After tearing it down to the foam layers, it appears that it’s solid latex in several layers of varying density.
This is what they say about the core layer: Our exclusive and proprietary-formula latex foam rubber – the highest-grade mattress foam available – has more than triple the natural rubber as ordinary Talalay latex, and offers the perfect balance of terra-firma support℠ and pressure-relieving comfort.
This is what they say about the comfort layer: Our proprietary formula of layered densities of the world’s finest latex is designed to offer maximum pressure relief and enhance conformance for deeper, more restorative sleep.
at any rate, this mattress is obviously worth way more than I paid considering what just 10" of good latex would cost me.
I wrapped the foam with a fitted sheet and slept on it last night. My wife said that it was by far the most comfortable mattress she’s experienced, and she said that I didn’t snore at all last night. That’s pretty amazing. Maybe I stumbled onto something good. Do you have any information on this company and their materials? They seem to think highly of it at those prices. Can’t pay too much for zen though right…?
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You can read more about the previous versions (up to version 4) of Pranasleep mattresses in post #3 here and in post #2 here and in post #3 here and in posts #1 and #2 here and a forum search on Prana (you can just click this) will also bring up more information and feedback about them as well.
The old models of Pranasleep used thicker layers of polyfoam in the quilting layers than I would be comfortable with that was a weak link in their mattresses but if you are comfortable with buying a used mattress then just the latex alone in the mattress (which I believe is 7" in the Vinyasa) would probably be well worth the price you paid.
As far as I know Pranasleep uses 100% natural Talalay from Latex International in their mattresses but I don’t know the specific firmness of the individual layers so you would need some trial and error to find the combination of layers that works best for you out of the layers that are available to you.
That’s great news that you slept so well on your layering combination. While I wouldn’t personally consider their mattresses at the prices they normally charge … it’s certainly a great source of latex layers for a DIY project at the prices you paid.
Best of all though you seem to have slept well on the layers you are sleeping on which is great news 
[quote]What I need now is a good way to wrap the mattresses to protect the foam.
Do you have a recommendation on a zippered mattress cover in twin XL to protect the foam from tearing, but that will maintain the ventilation from the perforated latex foam? [/quote]
The component post here includes the better sources for mattress covers I’m aware of and if you are looking for a thinner and more stretchy knit cover instead of a quilted cover then the list in post #4 here may be helpful as well.
Phoenix