germination

I have a waterfarm system-
600w enhanced spectrum Hps hortilux bulb
a reflector with a glass separator
nextgen ballast

fox farms 2 part

I do not have rockwool cubes...can i do this without them? into hydroton....--
when do i add the first bit of fertilizer and
what is the distance my light should be? any other hints much appreciated.

P.s do I need to have my plants built in a place with a lot of reflection? If so, how can i do this....
 
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