MH or HPS?

Does MH make the plants grow more then HPS when in flowering?

Lizard.King said:

Does MH make the plants grow more then HPS when in flowering?

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HPS is in the red spectrum. What you would want for flowering stage.
MH is in the blue spectrum. what you would want for veg stage.

Yeah but does MH make em grow better then HPS cause Ive been growin in hps with a 250 for a month

hps will give you better buds iv used a 400 watt mh all the way through.Then bought a 400 watt hps and to me hps gave me better buds.

MH for veg and HPS for flower, they can be used for both but the HPS will give you better buds

hps + duel spec bulb. start to finish.

I plan on getting a dual spec light in a month just this ballast is puttin me in the hole for a week or two

I'd like to get one too, but then I'd have to get a 600 watt system. So I'm just going to get a 600 watt mh with a cool tube. Then run the 400 watt hps cool tube I have now at the same time the 600 watt the whole way through. I'm gonna have to do some crazy vent setup to have 2 cool tubes in my 4x4 tent.

Week 5 White Widow Pics

Blue spectrum promotes growth and maturity in nature, while on the other hand red spectrum promotes reproduction and breeding. If you can veg with M/H and flower with HPS. Anything else is only putting undo stress on ur plants naturally.MH will also make ur plants stretch during veg and just recently when i introduced my MH to the flower room cuz it was just laying around, i ended up with 3 hermies on a batch that otherwise never produced seed.

HPS by far for flowering. IF u want seedles fat, juicy nuggies anyway.late

I've noticed more crystals on my bud under a metal halide but the buds were smaller. I use HPS because the size advanage over an MH makes up for any possible small increase in quality.

stunned said:

I've noticed more crystals on my bud under a metal halide but the buds were smaller. I use HPS because the size advanage over an MH makes up for any possible small increase in quality.

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That is EXACTLY what i've heard.

MH in flower = more thc on bud
HPS = Slightly less Thc, but more yield, bigger cola

I still say use both at the same time

So when you get a dual spectrum MH/HPS which one should your ballast be set to?

Ballast are set for the HPS, and conversion MH bulb.

I have the option to go with MH, but i'll see how this grow turns out then decide if I want to include it in.

Dual Spec lights are the best to get though because they provide the best of both worlds.

The Son Agro bulb has 400watts HPS and 30wattsMH
So you still get some of the spectrum you need/aren't getting

yo mh cost to much to run you need one of these replaces mh 400 one for one and is so cheep 141.00 High Bay Fluorescent 4lmp T5HO 120/277 Fluorescent Fixture, Strip light, 20-FHB45HO-MT, GFCI's, Exits, Wirenuts, High Bays, Contractor Lighting & Supply

then get these bulbs Sunlight supply’s sun system, Tek Light T5 HO florescent grow lights and Spectralux bulbs

I recently read an article in IC mag that concluded after doing multiple side by side grows that using hps only from start to finish produced bigger buds, bigger plants and higher yields than using MH during grow, HPS during bloom. They also stated that even when they used the MH and HPS simultaneously the plants more directly under the HPS bulbs produced much bigger, higher yielding plants and a really uneven canopy.

So, that is what I am doing wit my current grow. HPS only from start to finish. But I would never use HID bulbs with young clones/seedlings though, T5 HO are best for them IMO.

THseaman said:

I recently read an article in IC mag that concluded after doing multiple side by side grows that using hps only from start to finish produced bigger buds, bigger plants and higher yields than using MH during grow, HPS during bloom. They also stated that even when they used the MH and HPS simultaneously the plants more directly under the HPS bulbs produced much bigger, higher yielding plants and a really uneven canopy.

So, that is what I am doing wit my current grow. HPS only from start to finish.

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Great response, and im glad your going HPS
+rep..in the right direction

HTGSupply - Heres a link to a 4oowatt HPS/MH with ballast for $165.00
http://www.htgsupply.com/growlights.asp?categoryID=1&subcategoryID=155&typeID=55

OH and BTW.. MH Through Flower produces heavy resinous buds but <yield

weedyoo said:

yo mh cost to much to run you need one of these replaces mh 400 one for one and is so cheep 141.00 High Bay Fluorescent 4lmp T5HO 120/277 Fluorescent Fixture, Strip light, 20-FHB45HO-MT, GFCI's, Exits, Wirenuts, High Bays, Contractor Lighting & Supply

then get these bulbs Sunlight supply’s sun system, Tek Light T5 HO florescent grow lights and Spectralux bulbs

Spectralux™ 4' T5 H.O. (High Output)​

Fluorescent Grow Lamps​

901592​

4 Foot. SPECTRALUX™ T5 54W H.O. (High output) ​

Blue 6500K (Vegetative Growth)​

$ 12.95​

Scroll down to order.​

901589​

4 Foot. SPECTRALUX™ T5 54W H.O. (High output) ​

Red 3000K (Fruiting & Flowering)​

$ 12.95​

Scroll down to order.​

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T5s are great for grow but they suck for flowering. Flowering=HID

Lizard.King said:

Does MH make the plants grow more then HPS when in flowering?

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WOOP WOOP WOOP Stoner Alert!

For fuck sakes I meant Vegging not Flowering woops haha