Problem Pls Help

[blactunda]

8 site xl system
Current culture nutes
8 autoflower plants
Only two plants in the system showing brown/ gold spots on fan leaves
Day 58 and first week on bloom nutes

 

[blactunda]

Trying to post pics but getting a security error...

 

[HydroGuy]

8 site xl system
Current culture nutes
8 autoflower plants
Only two plants in the system showing brown/ gold spots on fan leaves
Day 58 and first week on bloom nutes

Are you using ro water and are you adding some kind of cal mag? Are the spots appearing on new leaves or older leaves towards bottom of plant?

 

[blactunda]

Im using tap 60ppm and cal mag... spots only on the big fan leaves in the middle of the plants

 

[HydroGuy]

Hmm almost sounds more like a lock out rather than a calcium deficiency. What is your ph reading, how much calmag are you feeding and what is your EC?

 

[blactunda]

Ph runs from 5.6 to 6.2.. The thing is only two plans in the system showing the problem.. My ppm starts from 440 and drops

 

[blactunda]

Im following the CS feeding chart for 65 gallon system

 

[DR.GT]

That's a long veg. How close are your lights and what kind of Lights? How does the root Zone look are they white and healthy and how full are the buckets ?Sounds to me like they're hungry I would up the Cal Mag to 125 PPM total before adding Nutes in. Then bring your total ppm. to around 5 -550 (500 scale) and see what happens.

 

[DR.GT]

Pictures are a huge help in resolving issues.

 

[blactunda]

 

[blactunda]

 

[blactunda]

This my first grow and after all my research i tried to follow what i've read... i waited to the vertical growth stop on the bigger plant to start the bloom nutes...

 

[blactunda]

These are autoflowers and i actually had to bend the tops from getting to close the lights.. I'm running a mars 2 1200 and a perfectsun 1000 leds.. 5x9 x8 tent

 

[m8ty]

Why are the ppm so low/weak?

 

[blactunda]

 

[blactunda]

Why are the ppm so low/weak?

well i've read that autoflowers dont like crazy nutes so i'm running little under CS feeding chart

 

[HydroGuy]

Try a 24 hour flush with plain water and uc roots ph of 5.8 then fill back up with half strength nutes for a 24hours and then finally bump back up to full strength. If it was a deficiency you would see the spots on new growth but this sounds like a lock out to me. I also would try to keep ph more between 5.7-5.9 during blooming stage. Too much fluctuation in ph can cause lock outs that will appear to be deficiencies this is also true for water temp fluctuations. CS nutes are designed to have a very low EC which is perfect for rdwc systems. How much cal mag are you adding per gallon?

 

[blactunda]

Well actually ph is pretty stable tru out the grow.. i the one that add ph down after it reach 6.2 ..

 

[blactunda]

 

[blactunda]