starting over

[shehulk]

Hi guys im, starting over with a new grow a few questuions ....

is it okay to use a 250watt mh on seedlings if so what distance should they be from my plants?

or should i use a t5 if so how long camn i keep them under till i move to metal halide they will be autos

thanks ,

 

[aridbud]

MH....at least a foot distance. You can fry them in a hurry. T5 works well, can be about 3-6" above plants.

Rock wool drowned them? I did a mix of perlite and rock wool 50/50 ratio way back when (photos...now strictly autos), breaking up cubes, wet. (Dry, they emit dust....not good for lungs).

Depending on lumens of T5, you can do them throughout. 250w MH will allow for more bountiful growth.

 

[shehulk]

cherrs so what is the safeist distance also what size pots should i use oh yeah and will the metal hailde make them sternch

 

[aridbud]

cherrs so what is the safeist distance also what size pots should i use oh yeah and will the metal hailde make them sternch

MH....at least a foot distance....12"-16".

3-5 gallon pots, depending on what type auto you are growing. Sure you can do smaller pots but you won't reap a good yield, or in my experience. Low stress train the lower branches.

If your light is 250 mh, no, the plants won't stretch. Be cautious of the heat factor. I've fried numerous colas getting too close to the bulb.