Auto lemon haze..leafs yellowing?

Hey guys got two auto lemon haze growing under a 250 watt hps..they've been flowering for about two weeks so is that y my bottom leafs yellow? They get yellow almost pale. I'm feeding them bloom ferts so I know they aren't hungry..it did this the last time I grew and I got over 60grams per plant so I know it doesn't affect yield.

it could be many things, posting a pic would prob be better to determine exactly whats causing this, best of luck

Unfortunatly I can't post pics. But what do u think it could be?

Without pics, I'll guess it's just the plant pulling nutrients from the bottom leaves. It's natural.

Doc Tor said:

Without pics, I'll guess it's just the plant pulling nutrients from the bottom leaves. It's natural.

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100% mate. putting guano at the bottom of the pot helps stop this a little

its N def mate. either that or they just wasnt getting enough light...but id opt for N def all you can do is continue to feed complete npk up untill 2 weeks before the chop.
dont sweat it mate. good luck