I believe the reason different tiles work well is down to mass, specific heat capacity and then thermal conductivity, all off which can be seen in the smaller menu or on the wiki
I think Igneous rock is the best early material, one thing you're doing is storing it in water tanks, water tanks allow for better temperature transfer with the tiles they are sitting on and the air around them, if you were to just have that water be empty to a big blob of water and sit that on some insulated tiles you would I think be even better in that only the top layer of water would be exchanging much heat at all
So for keeping something the same temperature or having very little temperature exchange you want low thermal conductivity and high heat capacity
I believe the reason different tiles work well is down to mass, specific heat capacity and then thermal conductivity, all off which can be seen in the smaller menu or on the wiki
I think Igneous rock is the best early material, one thing you're doing is storing it in water tanks, water tanks allow for better temperature transfer with the tiles they are sitting on and the air around them, if you were to just have that water be empty to a big blob of water and sit that on some insulated tiles you would I think be even better in that only the top layer of water would be exchanging much heat at all
If you haven't watched him there's another UA-camr Francis John, he did a video a long time ago about temperature and how it's transferred.