Are my plants ok or is it just me (Pics)

Hi All

Is it just me or do they look a little off colour it might just be me being paranoid here is a bit of info

They have been on 12/12 for 18 days now and most are showing sex all female.

Im using an NFT system with R/O water mixed with tap water to bring the ppm up to 140 with canna nutes at almost full strength 1000-1100 ppm. Ph is almost constant at 5.8, temps are 28-31 and 19-22 night time, humidity averages at 40%.

They are under 600w HPS at the moment but i have a 1000w HPS for the last few weeks of flowering

Any suggestions or comments welcome

they're a little burnt, but not bad. Back off the nutes just a little. Make sure you're feeding schedule isn't too often. once every 3rd watering is fine. Once you get a good feel for it, then you can change it up. Put them under the 1000 now. Why are you waiting? The usage difference isn't too much.

what strain is it? seems like you should have a little bigger buds under 600w hps 18 days in flower, could just be me though...

Its just bag seed.

With an Nft system they are watered constantly via a little pump, i will bank off the nutes and see what happens. The only problem with the 1000w is the Heat it gets upto around 38 with the fans on constantly.

I think they where stunted from a mg deficiency. these pics are from 7 days ago you can see how much new growth there is