I have used grow lights to much success. I have two 1000 watt ballast for Nickle and Sodium. The LED work well also. If you pinch the flowering tops you will generate additional flowering tops (called suckers) these are almost complete new plants. THus you can generate many flowering tops from one plant. Increases the yield for each plant by a lot and produces a fuller plant. Stockier not as viney.
I’m using T-5’s. 4 bulb. 4’.
My first attempt at growing indoors.
I just seeded too early.
Not sure what you mean about pinching flowering tops.
Is there any video that might help me “see” what you are talking about.
Are you talking about creating new tomato plants or increasing more
tomatoes on the one plant?