cali skunk

I was looking to buy 2 300waatt marshydro LEDs but i m not sure if they are worth the money I was going to put in my 48x48x78 grow tent but kinda looking for someone that may own sum or knows more about LEDs I use t5s thanks for any help

I got a Kali skunk in ffof soil under a hydrofarm t5 4 ft 6 bulb I'm not sure when it started to flower but wanted to get some opinions on how much longer I should go

Was just up in attic n seen my stems are purple is this from it getting to cold at note I been keeping it 68 to 70deg at nite n 72-77 with lights one