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/diy/ - Do-It-Yourself - Sensory Deprivation Tanks

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Sensory Deprivation Tanks Anonymous 05/18/14(Sun)21:11 UTC+1 No.639987 Report

Hi /diy/,
I'm thinking of making a sensory deprivation tank over the summer, and need some advice from anyone with any knowledge.
Firstly, is Epsom salt essential? And if not, what is the cheapest source of salt?
Secondly, i'm fairly set on using plywood, but what is a good insulator to use inside the tank to keep the air and water warm? Should I use an air heater as well as a water one? How much ventilation is needed, and what is a good way to ventilate without letting in a lot of light? I'm also curious as to how solid the frame needs to be, as it will hold over half a ton of water. I have pretty good woodworking skills and am okay with electrics. If anyone has any tips i'd be grateful.
>pic unrelated
Anonymous 05/18/14(Sun)22:55 UTC+1 No.640032 Report

styrofoam is a very effective insulator.
you can ventilate without letting light in by using a curved tube to exchange air.
water heater and thermostat is a good idea to keep the temperature regulated at whatever is ideal. doubt an air heater is required.
frame needs to be solid, sure. calculate the force on the bottom and side walls from water pressure.
Anonymous 05/19/14(Mon)03:20 UTC+1 No.640143 Report

All I know is it requires a shit ton of epsom salt. Like 800 lbs to metric one ton. Even for a small one.
Anonymous 05/19/14(Mon)03:27 UTC+1 No.640145 Report

you should look and see if road salt will work, that's cheap. you won't need to heat the air.
Anonymous 05/19/14(Mon)04:06 UTC+1 No.640158 Report

>magnesium sulfate ~= table salt
Anonymous 05/19/14(Mon)06:41 UTC+1 No.640216 Report

Regarding salt: Pool salt is much cheaper than salt for eating, just remove the random things it sometimes contains (Nails etc)

This, do them maths before filling it up.

Also, before building one, maybe go lay in one? I know where I live you can spend 6 hours in one for like $150.
Anonymous 05/19/14(Mon)07:32 UTC+1 No.640236 Report

Reread it.
Anonymous 05/19/14(Mon)13:00 UTC+1 No.640274 Report

A better and cheaper alternative is to build a ganzfeld goggles, it effects the mind in the same way as youl hallucinate, unless your into the floating feeling of a tank while being wet, I hope you have a place youl be storing this thing in to not take up space if you go the tank route.
Anonymous 05/19/14(Mon)14:35 UTC+1 No.640290 Report

I seem to recall that with these tanks, you start off with ~800 lbs of water, and then you *add* another ~1200 lbs of salt.... so that's,,,,, fucking heavy.

The commercially-made ones sit right on the floor.

There is HDPE agricultural tanks available that are almost exactly what you need. You'd have to cut the entry way bigger but anyway. The point is that the whole lower section is cast from one piece of plastic, so you have no seams to leak.
Anonymous 05/19/14(Mon)17:20 UTC+1 No.640330 Report

From the amount of salt and work required to keep it sanitary and working this might be one of those things where it's cheaper in the long run to just get a membership at one of the tank clubs. I think some around here you can pay ~$60 a month and you have access to massage services for a reduced charge as well. I'd a /diy/er on most things but when I looked into deprivation tanks it sounded like a big hassle to run your own.
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