heavyweight fast and vast coco cana indoor

Hi all. This is separate thread for my first grow. In one tent is have 2 super skunk by Sensi,2 amnesia haze (apologies I've forgotten the name of the breeder), one dark purple by sweet seeds and 2 fast and vast by heavyweight. ALL SEEDS ARE AUTO'S!!!! I have an overall thread on my grow so...

Just about to start 5 of the Fast and vast under 600w Gonna do 1st 3 weeks under T5, the remainder under 600w. I'm a bit unsure whether to run MH or HPS. Or MH Until flowering begins and then switch. I wanted to do in Cana coco cycle, any advice when to start giving them Cana A&B, and when to...

Just about to start 5 of the Fast and vast under 600w Gonna do 1st 3 weeks under T5, the remainder under 600w. I'm a bit unsure whether to run MH or HPS. Or MH Until flowering begins and then switch. I wanted to do in Cana coco cycle, any advice when to start giving them Cana A&B, and when to...