Hortilux Mh Or Mh Blue

[L's]

which should I get? Is it really worth the extra lumens or blue?

 

both hortilux just one cost more

[Herb Cannabis]

Look closely at the light intensity graphs on the box, the more intensity in the spectrum the higher the cost of the bulb. The short answer imo is it is worth the extra money. Top quality equipment counts nearly as much imo as the genetics if you are looking for quality medicine.

[Mememe]

MH is already blue spectrum, wouldn't you only want extra blue if using an HPS?

[LITLJON]

You use the Mh in the veg stage right? Unless you veg to over 3+^ft (YOU GOT ROOM FOR 9+ FOOTERS FINISHED) tall or veging hundreds of plants, not worth the extra cash. IMO,

Look closely at the light intensity graphs on the box, the more intensity in the spectrum the higher the cost of the bulb. The short answer imo is it is worth the extra money. Top quality equipment counts nearly as much imo as the genetics if you are looking for quality medicine.

[CaffeineForAll]

The MH blue's are ridiculous in their output. However the cost makes it just too expensive to relamp and keep meds affordable for my patients.

 

MH can be used in veg and flower, hps can be used in veg or flower, either at ANY time. The difference will be in growth rate and structure. MH promotes compact bushy growth with smaller leaves and stems. HPS promotes lanky internode spacing with less bushy growth, but with bigger leaves and stems. Flowering is generally better with HPS because of the influence on leaf growth, which translates into bud growth. Flowering with an MH will generally produce smaller denser buds with a slightly higher potency but a reduced yield compared to the HPS. They will also stretch much less during the transition.

 

Some strains will react badly to either one used at either time, these are just generalizations. For instance my jack herer loved vegging under MH, but flowering under MH produced very small buds compared to the HPS. Conversely, a Kush I have loves vegging under HPS, but yields better when flowered under a MH.

 

Knowing what each bulb is capable of doing, along with what your strain likes/dislikes, can really let you dial it in through the spectrum.

 

For the most part, I veg under both MH and HPS, and will alternate bulbs in the hoods every few days to get a good mixed spectrum. When its time for flowering, they are either kept under MH's for the first 2 weeks, or on strains that show a dislike for that, I'll run the first week with MH, switch to HPS the second week, back to the MH for the 3rd, and finish out with HPS.

 

Most of the time during the last week I'll hit em with the MH again, I've noticed this helps the calyxes to "pop" and swell.

 

Whenever messing with light spectrum's be wary of too much stress, this can cause hermies in sexually unstable varieties, even more so for strains that originated from fem seed.

[cristinew]

great to use for starting seedlings

[LITLJON]

Here is a article that explains a little to help you make your choice.

 

Light Quality

Light quality refers to the color, or wavelength, of light that's emitted from any light source.

 

Blue Light

Blue light regulates the rate of a plants growth and is especially helpful in plants with lots of vegetation and few to no flowers.

 

Red Light

Red and orange light triggers hormones in plants that increase flowering and budding, but plants cannot grow with red light alone.

 

 

Read more: How Does Colored Light Affect Plant Growth? | Garden Guides http://www.gardenguides.com/74951-colored-light-affect-plant-growth.html#ixzz1mqbpErR9

 

This is at the bottom of the page.

200 - 280 nm UVC ultraviolet range which is extremely harmful to plants because it is highly toxic.

 

280 - 315 nm Includes harmful UVB ultraviolet light which causes plants colors to fade.

 

315 - 380 nm Range of UVA ultraviolet light which is neither harmful nor beneficial to plant growth.

 

380 - 400 nm Start of visible light spectrum. Process of chlorophyll absorption begins. UV protected plastics ideally block out any light below this range.

 

400 - 520 nm This range includes violet, blue, and green bands. Peak absorption by chlorophyll occurs, and a strong influence on photosynthesis. (promotes vegetative growth)

 

520 - 610 nm This range includes the green, yellow, and orange bands and has less absorption by pigments.

 

610 - 720 nm This is the red band. Large amount of absorption by chlorophyll occurs, and most significant influence on photosynthesis. (promotes flowering and budding)

 

720 - 1000 nm There is little absorption by chlorophyll here. Flowering and germination is influenced. At the high end of the band is infrared, which is heat.

 

1000+ nm Totally infrared range. All energy absorbed at this point is converted to heat.