in pursuit of clarity

It was recommended I freeze the water in layers. The water is still boiled twice at high pressure.

Result: cloudy layers. Conclusion: attempting to duplicate the action of ice makers and the formation of icicles fails because the water isn't running over the frozen surface where all but H2O adheres to the building crystals, rather it all just sits there, whatever minutiae is present in the water, to be frozen inside the crystalline matrix.

For what it's worth, I used filtered water. So much for 10 layers of filtering, eh?

Next attempt, reverse osmosis water, utterly devoid of all particles. If that turns out cloudy, then I'll pressure cook that too. And if that fails, then I'll pressure cook reverse osmosis water and freeze it in layers. Then if that fails I’ll hang myself, check that, seek consultation from professionals.

ice spheres

Ice cube spheres would be oxymoronic then, wouldn't it? These are novelty golf balls, but the idea of round ice does make sense from the stand point of melting in your drink -- surface area and all that.

ice cubes

Here are ice cubes that live up to their name. I'm trying to get clear ice cubes. I heard if you boil the water twice then that rids the water of minerals and air that clouds the ice. I've failed three times. It occurred to me maybe water doesn't boil hot enough at altitude so I pressure cooked the water on severely high, twice each time, so that's four times in the pressure cooker and it still clouds. I'm going to try reverse osmosis water next. If that doesn't work, then I'll boil the reverse osmosis water. (twice) I'm not going to quit until I try everything. Some of these actually do come out partially clear, but not 100%.

Tovolo trays.