6wk Auto, yellow leaves and brown spots (new grower need help!)

[bluekussh]

Hi all, quite a newbie to growing. Have 4 auto flowers growing in a Wilma plant pot system in a 120 tent set up. 3 are Blue Kush Auto and one is Auto Sour Melon all just over 6weeks old and have started flowering. Plants are a bit stunted due to trial and error.

600w lights on 24/0. Currently being fed Ionic bloom coco at 1/2 strength. Growing in a hydro/coco mix which was bought at a grow shop. Plants are being fed via a dripping system for 15 minutes 3x a day.

A few days ago after switching to bloom at 1/4 strength opened tent to find leaves had started turning yellow the day after starting new nutrients. They did have a calcium def a few weeeks ago which has been treated with Ionic calmag.

I thought perhaps the issue was lack of nitrogen and girls wanted a higher strength so upped bloom nutes to 1/2 a few days ago. Have also given a feeding of calmag yesterday.

Some leaves are starting to die and brown spots on a few. Anyone know what the problem could be and any home remedies I can use to get my girls happy and healthy again?

 

[Chris Scorpio]

Kill lights my friend, then we can see them better

 

[bluekussh]

Sorry, haven’t got a great camera on my phone either! Hope these are a bit better. Yellowing and crispness is worse down the bottom of the plants but is spreading upwards. Leaves around the flowers are a nice healthy green.

 

[Papageno]

Could be root rot. Hard to see with the pics but it looks more like total shut down...after an over feeding and in also some self feeding from underfeeding.

You have both overdose and under feed with droopy cragely leaves. Poor vigor bad physiology.

Flush them.

If I am wrong the answer is going to be... for the other problems... to flush them.

Next time don't try to correct. The fix is often clear it out and start over and that is where coco is king. Total control.

 

[Stunned]

The fix is often clear it out and start over and that is where coco is king. Total control.

Amen to that!

 

[Papageno]

By the way dont feel bad as this is super common. What likely happened was...

You noticed a defficiancy. It could be due to underfeeding. It could be also due to pH problems, infection, insects (not likely). You have what is likely a rootball problem though. Not underfeeding. That is not likely.

Then you over feed to correct. That can and will, after enough, cause problems.

Very common...welcome to being a grower by the way...you made it!

Now the insects that cause rootball problems you eventually see easily and would by now. I don't even know if they go into coco they may avoid it completely. They may love it I don't know.

For infection or salt build up or pH problems you clean it out.

For bad problems like an infection you either sterilize the medium or you run beneficial bacteria through to clean it out.

Then go back on your plan after shock therapy.

That is really medium irrelevant other than no insects in the roots in hydro.

 

[Leopold Bloom]

I grow hydro I had a plant do that and it was root rot now I put bile botanicare hydroguard in my hydro set up once a week haven't had the problem since