Tried a grow using tomato plant feed way back in the day, it wasn't good! Some people swear by it.
Tomorite has an NPK ratio of 4-3-8. This means that it contains 4% nitrogen, 3% phosphorus compounds and 8% potassium compounds.
Old school folk swear it works like canna pk in blooming, others that it's all a plant needs and molasses.
It don't look happy, has it recently changed pots?