Hey guys.........
Ok, this is not a very interesting experiment, but I thought I should let you all know. After I got my utricularia gibba, I seperated some of it. I put some gibba in a container full of water with peat moss at the bottom. I used another container with some fine burnt red soil mixed with water. I left both of them be for a week.
The result? The gibba in the container of water and peat moss grew new parts and lots of bladders while the gibba in the container of water and fine red burnt soil barely even grew........
Therefore, utricularia gibba prefers acidic water and burnt red soil is not suitable for growing utricularia gibba in water.
Cheers