Proper size of my plants

ok i was told the light sweet spot is about a hands distance with my light being a sunblaster 39 watt HID can i put the light only 2 inchs from the top of the plants...how much should i lower the light?

No, they are 20 days old, they are not born until they come out of the ground and open their leaves. They are a bit stretched, but with a T5 you can have it as close as 2 inches, which will stop them getting too lanky. This light really isn't that strong, this is why they may seem a bit small for 3 weeks nearly.

Fayah_Burn answered grow question 14 seconds ago Hey mate! The plants look fine! The stems are getting very long though.. you can burrie them a little deeper when you transplant, in the meantime you could give them a little support with little sticks or pieces of wire for example.. And like HerbalEdu mentioned lower the light a little. Good luck 🍀 with your first grow! If you have any question send me a message

Look like they stretched a bit too much, light too far and 39w remain pretty small. Regarding that they're doing well, but mine are bigger at the same stage with a 250w as comparison.