Magma Blocks/Soul Sand won’t effect water

So, I am currently building a water elevator, I was expecting the soul sand/magma block to interact with the water. Suddenly, they did not. I placed the water to block 68(Y) to block 33(Y), and placed the soul sand under wear the water stopped. No bubble columns in sight. So then I placed the water from block 37(Y) to 33(Y). No results there either. I don’t know if theres a limit to bubble columns, but i just lowered the water 31 blocks down and I still don’t have an elevator!