The best replacement for mh is hps.

The best alternatives to mh are rated as following:
★★★★★  hps
★★★★  t5
★★★★  hps for flowering
★★  ni cd
★★  hps lights
★  cfl
★  li ion
★  kh
★  ni cad
★  hps veg
★  uh
★  hps hotter
★  nms
★  hps heat
★  hps grow lights
  hps bulbs
  dual spectrum
  ni-cd
  hps flowering
  sq
  lithium
  high pressure sodium hps
  hps lamps
  hqi
  240 mh
  hps lamp
  hps what is better
  solarmax mh
  li-ion
  gh
  nicad
  vho

Your alternative for mh is not listed? Suggest!
Speaking about mh, one probably shouldn't forget about hps ballast.

Other search terms related to mh and their ratings are:
★★★★★ hps ballast
You have in mind a companion for mh and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of mh in all years. Click on graph for more.
mh
hps
t5