Whats wrong with my ladies?

[sacro]

Alright, so these babies were put into flowering April 2nd. The spots have been there since veg state and for some reason I am unable to get rid of it.

Soil PH meter shows 6,5, my testkit for water shows 6,5 for my water after nutes added and far as I'm concerned they should be good PH wise.

My soil is 30% coco, 40% soil (for tomatoes) and 30% perlite. I feed once a week with BioBizz starter kit, but at very low doses (no way near the recommended for high intake in the instructions).

My light is a 250W SON-T Plus at about 50cm above the plants running 12/12. The growspace is a closed cabinet, 60x60cm. It is vented by PC fans and has some rotation-fans inside to stir up the plants slightly.

I feed once a week, and water 2-3 times depending on the pot weight and what soil humidity my meter shows. And the pots are 13,5 Litres of soilmix (15 to the very top).

Alright, so the patients:

Lady 1:





Lady 2:

 

[sacro]

Lady 3:






Lady 4:




So, any ideas what I should do?

Today I flushed all 4, and then watered with half dose of regular with nutes (Biobizz plans and extra cal-mag cause my tapwater is softer than puffy clouds). Any help is appreciated

 

[wyteberrywidow]

To me it looks like a cal mag def

 

[sacro]

To me it looks like a cal mag def

I actually added some Cal-mag to the feeding after todays flush. Could this actually be the whole problem? I had a friend suggest to add more potassium (K) but didn't try to add any extra yet.

 

[wyteberrywidow]

I actually added some Cal-mag to the feeding after todays flush. Could this actually be the whole problem? I had a friend suggest to add more potassium (K) but didn't try to add any extra yet.

Was this the first time feeding calmag?
In a coco mix calmag Is a must. I know you said the mix only contains 30% of it but still I think it's needed in every feeding like coco.
Yes I would say this could be the whole problem

 

[sacro]

Was this the first time feeding calmag?
In a coco mix calmag Is a must. I know you said the mix only contains 30% of it but still I think it's needed in every feeding like coco.
Yes I would say this could be the whole problem

I have added very small amounts of calmag cause some guy once told me it was hard to overdose in small amounts. I have been feeding calmag in 1ml/litre, and did 2ml/l yesterday.


Sent from my D5503 using Rollitup mobile app

 

[sacro]

Update:

Watered 0,5 litre into each lady using a little potassium (1mg/l) and some cal-mag again (2ml/l) and a small pinch of epsom salt, PHed to 6,5. Hopefully it'll give me some results

 

[Po boy]

cal/mag will clear that up. GL