Hps Hydroponics Grow
How tall should seedling plants be before transplanted to be grown under my 1000w hps buld?
I have a six buckett hydroponics system using rockwool...
It isn't how tall they should be, but rather how healthy they should be. You don't mention what type of plants you are trying to grow (hehe as if I cant guess), but if they are what I think, then they should be about 3-4 inches tall, and a nice green colour, and keep the lights well above the plantlings, as you do not want to burn them. And check for moisture levels in the soil frequently, as you don't want them to dry out!!. 1000 watt bulbs generate a lot of heat quickly, so be careful.
A look at what is currently available on eBay
 TIMER CONTROL FOR HYDROPONICS HPS MH GROW LIGHT SYSTEM US $15.95 
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 1000 WATT SUPER HPS HYDROPONICS GROW LIGHTS BULB US $34.95
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 HPS 600 WATT SUPER HPS HYDROPONIC​S GROW LIGHTS BULB US $34.95
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