I AM VEGGING UNDER 125W ENVIROLIGHT

WHEN SHOULD I CHANGE TO 400W HPS - IWAS THINKING AT FLOWERING STAGE, OR SHOULD I CHANGE IT A WEEK BEFORE??

ANY HELP APPRECIATED

I would change it before, the more light, the better!!
Enviro's are only better than HPS when the plant is a seedlin or a cutting.

Like jim jim says, the more light the better, but turn off the shouty key

give it to em now, bulk up in time for flowering.

sorry 4 the shouting so i should stick with 18/6 but change the light,
should i keep it further away than normal 4 a few days or will this cause stretching??

could i keep the envirolight running as well would this increase the altogher yield??

or just the 400w hps

yeh, just 2-3 weeks under the envirolite then finish them under the HPS. same setup as me, but i just vegged under the envirolite then flowered under the HPS. i wish now i'd put the HPS on earlier, so go for it m8.

yes, once mine showed sex i put the envirolite in also for a bit of a mixed spectrum thing.

You know they want it..........

LS

how close should i put it at first i heard 10 inches away correct??

do i need a contactor??

what exactly is it

Yep you need a contactor or your timer will burn out and possably feck up your crop...... Im not sure but I think they control the electrical current!!!!

i never used a contactor, i just set my lights on different timers with one to come on slightly before the other.

Forget the enviro with a hps as you need an enviro too close to the buds for it to be worthwhile,therefore getting in the way of the hps which will be higher

And yes you do need a contactor

Owd

For a 400 watter? Start at 18 inches, I would.
Then just use the back of your hand, held at canopy level to test the temps. If its too hot for you, then its too hot for plants.

not a necessity though owd

might prevent you burning down the house though.

With a 400w it is

We always like to give safe advice when it comes to leccy

And sound advice to save your crop

Owd

Cos Owd is a very conscientious type of guy

Seriously though for a 400 Watter a contactor is a DEFO

EM2

WHERE DO I GET ONE

hi shop do them
http://www.hydro2005.co.uk/index.php?cPath=57_32

http://www.hydro2005.co.uk/index.php?cPath=57_32

i got a contactor and got the hps running last night

cant wait to see how they do under that

they are about a foot tall now should i let them grow to about 2 feet before inducing flowering

i am looking to get the most out of the 400w, so i figured they should finish at about 3 feet if i do this= correct??