I would just like to ask the question which is more worth the money and growing power. 400W MH lamp 400W HPS lamp Thanks.
HPS by far although both have their advantages and disadvantages. I prefer a Hps bulb that has added blue wavelength
I like to think of.. MH as a clear bright bluish light that is best in early spring and sprouts. For the late season the red of the Autumn sun is best provided by HPS. So that's my take on the two.. I have enjoyed the MH bulb I have but count on the hps bulb to bring it home. Both can be used for the whole grow I understand.. Most favor hps.
You can get a 430 watt HPS bulb from Son Agro that works in a 400 watt ballast and put out 30% more blue light than a regular HPS. 2 birds, one stone...