Yellow leaves in flower

[Towlie]

So having this problem again pH is on point 6.5 going in run off is 6.3 ppm 865 don't know what to do every grow I have lately I get this problem got another 2 plants a week behind and don't want them ending up like this could it be my Mars hydro light

Last feed was 6ml grow 8ml bloom 4ml big bud 2ml topmax

Just give her a feed upped the nitrogen because its gotten worse in the space of 2 days
4th June

Today

 

[namvet25]

Are you useing cal/mag Just hold off nutes and see if what you fed her works.

 

[Towlie]

Are you useing cal/mag Just hold off nutes and see if what you fed her works.

I havnt added any cal mag as she looks fine at the moment and the water in my area seems to have high traces according to the stats online I'll see how she goes I checked this morning before I went to work and the leaves are even pailer and the tips on said leaves have started to crisp only on the already affected leaves didn't notice anything else on the top of the plant

 

[Towlie]

Problem: yellowing of older leaves bottom of plant Woking there way up to newer growth

Medium/grow method:
John inns soil no2

Feed: and supplements used:
bio bizz grow biobizz bloom biobizz topmax biobizz calmag biobizz alg a mic and advanced nutrients big bud

water source:
Tap water left to sit for 3 day min

Strain/age:
Day 40 give or take a day or 2

light used:
Mars.hydro ts1000

Climate:
3x3 cupboard temps 30°© RH 53 carbon filter removing air into the attic secret jardin oscillating fan moving air around canopy have a passive intake

Light scedual 20/4 all feeds are mixed into 1.5 litre bottles

I use a bluelabs pH pen gets calibrated almost weekly water comes out of the tap at 7.5 check the ppm the tap waters ppm sits 430ish or there abouts
Feed goes in try to aim for ppm 800 and 900

 

[Towlie]

Started on my younger lady's I give up

Give them a feed yesterday 8ml grow 6ml bloom 3ml alg a mag 3ml big bud 2ml cal mag to 1.5 litres of water run off was 6.7 didn't pH the water going in

 

[Towlie]

Thanks to @JM sticky I think I've found the problem magnesium deficiency will water with Epsom salts @ pH 6.5 next watering