A question I get a lot is can I use a LED/CFL/FL light for flowering? Sure you can! Though your yield will not be much to get excited about.
Professional HPS flower lights exist for a reason. You need a lot of light for flowering and LED/CFL/FL just don’t have the penetrating power of HPS.
Sure you can use a T5 fluorescent light to flower! But don’t be disappointed if your yield only allows you to roll one joint
I understand that some people want to safe energy and have a magical high yield but that is just not going to happen Stick to HPS, pay the bill (which is not that high) and you will be satisfied!
Any other thoughts?