Help Help Help!! Yellowness

[Gruffy]

Ermm well my mate is growing 4 widows and recently all the bottom leaves are starting to turn yellow and die ....is this overwatering, underwatering or something else ...the set up is 600 hps a few fans, intake, exhaust etc in some mixed soil which has perlite etc temp is always hovering above 28 degrees .. i know its a bit hot but new fans are on the way..oh yer he aint using nutes as its first time for him ..i cant work his problem out so i ask you guys :D

plz help xxxxx

[justaseed]

if you aren't using nutes then that's your problem! THEY NEED TO EAT

[doco]

Well it also depends on their age. If they are seedlings, then yes they are possibly being overwatered. If they are older than 3 weeks then they possibly need some nutes.

[justaseed]

he was talking about the bottom leaves so i was assuming that the plants had a few upper leaves as well so they must be passed the seedling stage and in need of food. how old are the plants?

[crazywill]

What's the PH of the water? and what kind of water,Tap, distilled, RO, rain,
water?