I am a nascent beginner in this field (and could not get my hydroponics kits off the ground, really, but I don’t think this was the lights, I think it was the nutrients) so please do not assume I have any kind of expertise here. But....
I have kits from Ikea. You can buy a whole kit, just the ‘strip’ light, or a bulb (for about ten quid) and my seedlings grow very nicely under them. No leaning, and they aren’t leggy, so I think the lights are good (the fact that the leaves are browning is not so good. I have started again in compost. I need to hoover the spare room more often, but my lettuce might make it to the table. So far, I have eaten three French beans at a cost of about ten pounds each!)