first grow in ebb & flow - shade leafs yellowing bad

[Budgrower4life]

Hello Icmag I am trying ebb & Flow for the first time.
I have made a few mistakes the light cycle I had them on
Was 14on & 10off

I am in ebb & flow with 8ins net pots with hydroton
I am feeding 15mins every 3 hours.

I was feeding Aptus super pk at 1ml per 10ltrs
And gh flora series grow micro bloom @ EC 1.5
And aptus top booster at 2ml per 10ltrs

The plants are 4 weeks 5 days into flower

Any adivise on how to fix these.the large shade leafs are yellowing
Fast

Hope the pics help

Thanks for looking..

 

[fredDRO.MoBB]

when plants start to flower your gunna see some leaves turnin completely yellow that's normal though.

 

[jammie]

thats normal- remember that your flowering nutes have less nitrogen. usually around mid flowering is when my fans yellow and fall off. some growers lollypop their plants so the fans are already removed. i feel this is a waste, as nature will do it when its ready. don't worry- your plants look great

 

[jammie]

wow- you beat me to it fred

 

[Budgrower4life]

Thanks every one i phoned the hydro shop they said my feed was too low at ec 1.4
And told me to up it EC 1.6 my gut feeling is that's too high cause the top leafs are
Very dark green