Q.grapefruit tree needs root ball trimmed
Someone told me several years ago I should use kitchen shears to cut off a couple of inches all around and under the root ball. It’s in a huge pot now. Can’t put in bigger pot. I couldn’t move it all if I put it in a bigger pot. I love it. I grew it from a seed and it got 2 stories high. I lost my house and had to cut it down as much as I could to get it into the apt. I qualified for. It’s about 8 feet tall now. I know it needs to be taken care of soon.

Here is an article on how to root prune a tree in a container:
http://www.starkinsider.com/2011/09/container-gardening-how-to-root-prune-a-tree.html
Happy gardening!