Seeds growth

Check how much light it gives in umol. I don't think watts are relevant in led as they seem to just ka

They could be bigger with better light and humidity, but if it's not autos and you have time, they are okeish, maybe will take a bit longer than expected but they will grow. When will be bigger with more mass, they will create environment around, now you have to ... All the best !

I’d try like 24-30” and both on..

Shall I move the light closer and use both switches

How far off the canopy are the lights? And I’d recommend just switching both switches on at this point.

There’s rarely any blurple LEDs that are 600w. I’d bet that’s a 100W actual draw, it’s a marketing scam most those light companies pull - not your fault.

600 true watts/ watts from the wall or “600w by Amazon standards”

Light issues? They under a 600w led just veg switched on what do you suggest

I’d like to see more growth from mine personally after 3 weeks above ground. It’s probably a light issue, would be my guess If that’s coco - hopefully you buffered it. Especially for brick coco