heat issues

I don't know I run 24 hr veg just because it is easier. alot of people suggest 18/6 I would do that if i had a timer plug. but I wondered about the same thing because i left my door open all night so light got in in dark hours. but my veg lights still hit the plant in flower. and I was told it would be fine and it has been.

Right now I am fliping my light cycle so my power is on at night instead of in the day (for energy reasons) and to do that I am running 12/14 (12 hours light and 14 darks) and will do that till I get my desired time (lights on at 10 pm and off at 10am). I cannot say if it will do anything**** but I do know in flower you have to have at least 12 hours of pure dark.

Slipon said:

you're absolutely right ..
but the set up/rest is pretty cool and give a idea how a stelth grow could be made .. but yea I keep my 49W T5HO 2-4 inches away ..

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yes the rest of the grow cabinet is good and could make a good veg or small flower room

smokekeeper said:

I don't know I run 24 hr veg just because it is easier. alot of people suggest 18/6 I would do that if i had a timer plug. but I wondered about the same thing because i left my door open all night so light got in in dark hours. but my veg lights still hit the plant in flower. and I was told it would be fine and it has been.

Right now I am fliping my light cycle so my power is on at night instead of in the day (for energy reasons) and to do that I am running 12/14 (12 hours light and 14 darks) and will do that till I get my desired time (lights on at 10 pm and off at 10am). I cannot say if it will do anything**** but I do know in flower you have to have at least 12 hours of pure dark.

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you need to have a constant light cycle with the lights you are flowering or vegging with but if i was you and thought this could happen again

i would bye a back up power supply that your mains could be run though and use a 20w cfl
so its on all the time your other lights are on but if you have a power cut the 20w cfl will use the back up power supply to keep light cycle good
this is not good for the plants but a lot better than all the lights turning off

hey smokekeeper,I'm kinda new to this,i accepted your friend request,but I'm not sure what it really means.do I have to send you one in return?or does the one you sent me work both ways?
I put a jug of frozen water in front of my intake fan and my temp is around 86-87,but we're having a major heat wave on the east coast.I'm definately gonna get some kinda cooler soon.I'm scared to death to put the jug in the phototron,it's too cramped and I'm afraid of putting the roots on ice.can the roots take more or less heat than whats above ground?my gizmo has two 3' fans(in and out),but other threads suggest the intake should be 2x the size of the out.Is this a necessity or is for optimal conditions?

i added you as a friend and it askes me if i want you to be friends with me. I just wanted to see how your op goes. I am new to so suggestions that people sent to you I might be able to use in the future with out haveing to start a new thread. I think you are my 7th friend on here.

I personaly don't know the answer to that one. but I would say that you would want a bigger intake to allow better airflow in,but at the same time one would think the exaust fan sould be bigger so that you can pull heat out. I think that your gizmo would set it up the correct way(or did you put the fans in) and was the 25w mh in there or did you put the in. I wwas thinking that could still be your heat sourse problem.

I try to help with what I know, and I will suggest thing I think I know from others. so anything I can help with I will

I wouldn't ice the roots, but ask around. lol maybe you could hang some dry ice in the just don't let it touch your plant at all. its smaller and colder. I might get yelled at for that comment we'll see

smokekeeper said:

Right now I am fliping my light cycle so my power is on at night instead of in the day (for energy reasons) and to do that I am running 12/14 (12 hours light and 14 darks)

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Dem 26 hour days must be long as hell bro.

JASON79 said:

yes the rest of the grow cabinet is good and could make a good veg or small flower room

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agree .. and I would even keep it like that .. just use boxes/book to pile up the plant and then remove em as it grows ..

make much more sens to me .. then to move the light/reflexter/wires up and down .. atlest in a small space ..

Cloudz2600 said:

Dem 26 hour days must be long as hell bro.

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yeah they are I had to start flowering at a differnt time then i wanted. after I got back in town I started fipping the light cycle figured it wouldbe less stressful then 24 hrs of dark. once I get the time right it will be back to 12/12

the fans & the 25w bulb came with the gizmo.the bulb doesn't give off much heat,I can touch it,but the biax bulbs give off heat.i know people who use these things to grow vegtables & herbs,but they don't have to hide those,so they keep them in thier living space.i was really hoping for more than one response about the 24 hour veg. thing.C'mon people,can ya hook a brother up?The paper work that came with the phototron is pretty vague about those biax bulbs,but with the claims they make about themI have to assume they're cfls.Although I was taught that when you assume you make an ass out of u and me.some one suggested i just put them outside,but it's hotter out there than my basement,so I can't see the point in that.

24 hour veg vs 18 hours
the thing is out of 20 posts
10 will say 24 hours and 10 will say 18 hours
so you can get great results from both ways

if heats a problem i would go for 18 hours so you can turn the light off 6 hours in the hottest part of the day

as for the light i have not used biax bulbs

JASON79 said:

24 hour veg vs 18 hours
the thing is out of 20 posts
10 will say 24 hours and 10 will say 18 hours
so you can get great results from both ways

if heats a problem i would go for 18 hours so you can turn the light off 6 hours in the hottest part of the day

as for the light i have not used biax bulbs

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have you ever heard of them before?

I used 20/4 in Veg. (under 294W of T5HO)

work great ..

I guess all over 14 will work .. and the more light the faster they grow ..

I just like to give em and my lamp a littel night time ..



now as they are flowering I of course use 12/12 .. (read 10-14 hrs works ?)

but I runn em a night time .. as I have a bit high temps. gave me 2 degress or so less ..
from 84-86F to 82-84F but wort it .. also fit me .. will turn on a few hrs after I get home from work and runn untill I get up in the morning ..
so can also be home to watch the 600W HPS (give me some peace of mind)

just how do it ..

mighty g said:

have you ever heard of them before?

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no but i was going to bye a biax fluorescent light, 4 lights in a shade 55w each

they looked good for a mother plant/ seedling and some plants in early veg

but i went for 4ft twin t5 tube, i think there 22w each tube
for my mother plant and seedling and 125w eviro light for veg

25w is not very powerful but you could grow some seedling/plants in veg under that light
the growth will be slow but they will grow healthy under that light
you will have to keep the light 1-2" from the top of the plants

and will need a more powerful light for mid/late veg
but if you are flowering under hps, you could finish the veg time and flower under the hps
for good results

I heard you need at least 12 hours of darkness.More is supposed to be ok,but there has to be a point where too much dark has to cause problem.

hey those biax bulbs are your heat issue. I never heard of them so I researched it, and th bulbs I found where reather high in kelvins the converter said that 1 kelvin was -425 deg ferinhight. and the smallest biax bulb I saw was 2700 kelvins. yours are mostlikly smaller. goggle kelvin converter! but they do put out alot of heat.

if I were you I would go 18/6 so the room has time to cool. when I am all set up(the right way) i will be using 18/6.

I actually like 20/4, I think it gives a good balance between a decent amount of light and I still have a few hours for the grow room to cool incase it gets too hot. Asking which light cycle is better is just asking for your thread to get derailed. There's so many opinions out there and some people ever have some weird combinations like 15/9 or where they have the lights cycle on in off every few hours.

mighty g said:

I heard you need at least 12 hours of darkness.More is supposed to be ok,but there has to be a point where too much dark has to cause problem.

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you need 12 hours of dark for flower. and I don't know the point that it starts being bad

JASON79 said:

no but i was going to bye a biax fluorescent light, 4 lights in a shade 55w each

they looked good for a mother plant/ seedling and some plants in early veg

but i went for 4ft twin t5 tube, i think there 22w each tube
for my mother plant and seedling and 125w eviro light for veg

25w is not very powerful but you could grow some seedling/plants in veg under that light
the growth will be slow but they will grow healthy under that light
you will have to keep the light 1-2" from the top of the plants

and will need a more powerful light for mid/late veg
but if you are flowering under hps, you could finish the veg time and flower under the hps
for good results

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only supposed to use 25w for germ. and 1 or 2 weeks.so sayeth the instructions to my phototron.gotta 100w HPS i'm gonna put in soon.when I transplant my babies to bigger pot.

smokekeeper said:

you need 12 hours of dark for flower. and I don't know the point that it starts being bad

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You need at least 12 hours of darkness, which is why light leaks become a problem. Too much darkness isn't bad, but too little light and your plant won't grow. Typically 12/12 gives you enough light and enough darkness. Hey, mighty I haven't really looked at any HPS under 150w, how many lumens does your 100w give?