Q.fruit trees
I have a ruby red grapefruit tree and it produces small fruit about the size of a large orange but has tons of seeds, dry meat, and no taste. What type of nutrient do I need to put on it?
Thanks.
This sounds very much like a nutrient issue. Citrus need a balance of nitrogen and phosphorous.
Here are some links that will refresh you on the care requirements and help you pinpoint and correct the issue.
https://www.gardeningknowhow.com/edible/fruits/grapefruit/growing-grapefruit.htm
https://www.gardeningknowhow.com/edible/fruits/citrus/citrus-fruit-thick-rind.htm