This was my indoor set up..Can someone please tell me why my seeds just either died or why my plant after i moved it from under the 10watt fluorescent light to my 400watt hps light just before the veging stage (when it had the two oval leaves) just shribled up and stopped growing. The stem didn't bend at all but. My indoor operation was as follows: I planted it in 1/2 perlite and 1/2 vermiculite under a 400watt hps light hanging 23 inches away from the top of the poting mixture. I have set this up in my garage and it is in a 35 inch box with a fan running with the light to keep it cool...... I really don't know what is wrong with them. Is it because these seeds are grown in cold weather or something like that....please help
hi there, as most just wanna throw the odd bit of info i shall try and help.
first of is you say seedling just died up and died, personaly thinking this could be a couple of things, lighting too close and burning plant. not enough water in pot and with the heat in room the soil dried too quick.
ok your box. im not sure how much you know so lets go with basics. you will need inlet out outlet vents. it is no good having a fan in a box if you cannot remove the heat that builds up. have your inlet at a low point and your outlet around a high point. temp reading with lights on will give you an idea on how hot your growbox gets, you can then work on getting the heat exchaged via your ducting and fans.
seeds: they DO NOT need ferts for the first two weeks atleast. they need water. give them a good watering then do NOT water untill the top inch of soil is dry. picking up a wet pot will give you an idea of the weight, after a couple of days feel the weight of pot again you should notice a marked differnce in the wet/dry weights.
Lighting: turn on your light, leave for 5/10 mins too get too working temp. now place your hand under light and move towards, you want too be able too hold your hand under the light, it should be nice and warm, if it is uncomfy and feels very hot your hand (plant will burn) is very hot the lights are too close.
if you could give us more info on your growbox ( venting/ light setup) we could then factor out certain things and work out what is happening too your seeds. but i think it could be your light (400w) is too hot and too close for the seedling. i would also say leave your seedling under a couple of CLF for a good week or two let them build themselves up a little.
Tamzi