Hi Guys,

What distance would you recommend having my seedlings under a 400W HPS? My 4 seedlings are 2 days old and the highest one is just under 4.5 cm hight with the inner serrated leaves still smaller than the 2 round ended. The lamp is 1.2 M above the seedlings with a temperature of 77oF at ground zero. I don't want the seedlings to stretch so does the current setup and hight sound OK, or should I replace the HPS with a CFL until the seedlings are more established and can handle the HPS at a lower height?

Baz
bazzae123 Reviewed by bazzae123 on . Seedlings under 400W HPS? Hi Guys, What distance would you recommend having my seedlings under a 400W HPS? My 4 seedlings are 2 days old and the highest one is just under 4.5 cm hight with the inner serrated leaves still smaller than the 2 round ended. The lamp is 1.2 M above the seedlings with a temperature of 77oF at ground zero. I don't want the seedlings to stretch so does the current setup and hight sound OK, or should I replace the HPS with a CFL until the seedlings are more established and can handle the HPS Rating: 5