How much water for clay bath?

I know this forum is a bit of a ghost town so not expecting an answer but hey, it's worth a shot.

I read below that the height of the water in the bath should be 4-5 inches, however that would seem too low an amount cover the entire body.

Should I stick with the 4-5 inches regardless of whether it reaches neck level or should I make sure my whole body is submerged with water? Would this dilute the strength of the clay water?

Thanks.

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