Sgunduranswered grow question 6 years ago So the solution is easy but depends all of your cash budget, I explain better: Led light consume a lot less power and have better results in all the stages considering the low heat produced too, HPS instead cost a lot less but produces lot of heat and consume a lot of power. So I usually raccomand led light (more compact- high efficiency- low heat production)
Tell me If this answer was useful for you or not, I can give you some advice about what led u can buy on budget.