can i use 400 watts hps/mh bulb on 600 watts ballast????????

well i got a 600 watts ballast and i wanted to know, will a 400 watts mh bulb be ok to be ran by a 600 watts ballast? i got the ballast in my deal with the 600 watts hps bulb

so what do you boys think?

these are the options i know of if i cant use it
buy a 400 watts ballast for the 400 watts mh bulb

jus get a 600 watts mh bulb?

+rep

you definitely need a 400 watt system to run the 400 watt bulb

You can run a 400 watt light on a 600w ballast but it has it's cons: the light's life span will shorten as it will burn the gas within it quicker due to the high wattage being fed in it. Vice versa you could also run a light with a higher wattage then the ballast and it will result in longer life span but lower output from the light as it will obviously run on the lower wattage being fed in from the ballast. If i were you i would just use the combinatoin you've got, it's no big deal, will only shorten the life abit; and in future you can run a 600w light. However you can always sell the 600W ballast and buy a 400w.

No, do not try to run a 400w lamp in a 600w ballast or vice versa! Just go buy a 600W bulb.

My father who has walls of electronics degrees always says, Quote: "Use the right tools for the job."

If you chance it a 400 watt bulb in a 600 watt will cause a fire. If you were smart a 600 watt MH bulb would be your best bet in a 600 watt MH ballest. 400watt to 400 watt 600 watt to 600 watt. Please remeber some places like HTGsupply.com have whats you can interchange a hps bulbwith a MH bulb.

whietiger88101 said:

If you chance it a 400 watt bulb in a 600 watt will cause a fire. If you were smart a 600 watt MH bulb would be your best bet in a 600 watt MH ballest. 400watt to 400 watt 600 watt to 600 watt. Please remeber some places like HTGsupply.com have whats you can interchange a hps bulbwith a MH bulb.

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thanks mate,

will have to get a 600watts mh bulb then, will the 600 watts mh bulb be ok with the ballast alredy have? does a mh bulb take only ballast's that are made for mh bulbs?

You would be way better off running the 600 watt hps than a 400 watt mh. Its just not safe first of all and you will get so much more light out of the hps! I run hps excusivly through veg and flowering with great results. Evan a 600 watt metal halide puts off much less light than a 600 watt hps. more light = more growth more light = bigger buds more light = stronger buds smiles

unless you have convertable ballast you cant put metal halide in hps ballast. if you have hps bulb just use it you will get great results. ive been useing only hps for 30+ years!

Oldgrowth said:

unless you have convertable ballast you cant put metal halide in hps ballast. if you have hps bulb just use it you will get great results. ive been useing only hps for 30+ years!

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well im a first time grower and just waiting to buy a good air cooled reflector and a 8"fan to go with it, well my seedlings are on they 18th day from day it poped the soil. i need another 3 weeks to buy stuff. for the future when i start the seedlings on the 600 hps how far do i keep it in the beginning ?

Some say yes - some say no. Doesn´t really help the questioner at all. But this is what happens with MOST questions.

Stupid question. Can you run a 600 HP on a 400 ballast that has a super lumen

What kind of ballast do you have is it dimmiable digital if yes you set it to 400w settings

nas2007 said:

well im a first time grower and just waiting to buy a good air cooled reflector and a 8"fan to go with it, well my seedlings are on they 18th day from day it poped the soil. i need another 3 weeks to buy stuff. for the future when i start the seedlings on the 600 hps how far do i keep it in the beginning ?

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You can veg extra week or two if you need to just veg longer.

Laura Prater said:

Stupid question. Can you run a 600 HP on a 400 ballast that has a super lumen

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stupid answer to a 7 year old thread.