Too much light??

[FlyGuyOU]

I have 7 sprouts ranging from ~1-2inches currently under 300w equavalint cfls (i think they are 23w or something) anywho I also have a 400w hps that im going to use, however can you have too much light for a seedling? I know you can with clones b/c they don't have the established root structure and they lose water, but is this also true for seedlings?? i want to give them the best and brightest 2-3months of their lives, but not over do it.

anyone??

[Lit Up]

More light = more lumens = more goodness.

You should be fine.

You prob don't NEED the 400w at the moment. Doing the math, 300w of cfl is roughly 13 bulbs @ 23w a piece. I would wait til they grow some more. That way you shouldn't have to worry about heat when they are that young. Hope that gives you some insight.

[hanayama]

yes more lumens the better, but i think your main concern should be heat.
they are delicate when young.
remember, we didnt switch to hps until almost flowering time.
i think better to wait a little longer then risk burning them

ill ship that shit tomorrow man...god bless your grow:thumbsup::thumbsup:

[FlyGuyOU]

thanks buddy, still havent taken any pics yet. heat is a non issue, we vent the a/c straight to the light, after running 18hr straight the temp is a wonderful 78 degrees. using some frozen water bottles the water stays a bit cooler.
im going to post some pics.

[allkillanofilla]

Once you see the first set of real leaves you can go right under your 400 hps no problem. I put mine under a 600 mh within two weeks after they sprout. In my opinion cfl's are junk i use t5's to germinate them then right under the hid lighting about the only thing cfl's are good for is mothers and germ...... of course this is my opinion

[stinkyattic]

As much light as you can/want to give, up to the point where you also give too muhc heat.
I agree that T5s are outstanding for young sprouts. I run my seedlings under T5s until they have 5 nodes and are ready for a transplant into something larger than a 3" pot. After that, a nice MH with the outstanding hort blue bulb... mmmm!!! Juicy!

[jer001]

I am starting seedlings too, I have had no success lately with my seedlings I have killed 20 fem seeds expensive. I germinate them and I put them under one t5 light in a humidity dome tray. I have been using cocoa pellets and watering them 5ml to 10ml of water each mourning. Aswell I am using a heat pad. They ussually sprout and green leafs come. After a week they turn yellow and thrivel up and then they are dead. please help thanks