It highly depends on bulb quality. Hortilux is very high quality and recommends mh to be changed at 6 months at 18/6 for best growth. I give a cheap mh bulb maybe 3 for best results.
for not the best results you can add months to this estimate. You may not even notice unless you are getting the most out of them.
It highly depends on bulb quality. Hortilux is very high quality and recommends mh to be changed at 6 months at 18/6 for best growth. I give a cheap mh bulb maybe 3 for best results.
for not the best results you can add months to this estimate. You may not even notice unless you are getting the most out of them.
It highly depends on bulb quality. Hortilux is very high quality and recommends mh to be changed at 6 months at 18/6 for best growth. I give a cheap mh bulb maybe 3 for best results.
for not the best results you can add months to this estimate. You may not even notice unless you are getting the most out of them.
I don’t use them anymore. I veg with fluorescents and flower with hps. When I had only a 4x4 tent I vegged with mh and switched to hps after stretch in 12/12. Kept plants short and bushy but very fast growth. I have used a 400 hortilux blue and a 600 but that is really an hps conversion bulb. Hps all the way through would give even faster growth but the plants will likely get taller and branchier too.