veg nutrient problems. plz help

[GenePerfect]

indoor

2x3 week old clones

100% perlite

fed once a day

24h veg under 600w hps

ph around 6-6.5

Dutch master original a+b

potassium nitrate

calcium nitrate

trace elements

ppms usually between 800-1100

 

 

1x pandoras box seedling, 6 weeks

60/40 perlite coco

fed once a day

curled down top leaves on pandora, same as the clones

 

Red stems, stalks, necrosis on leave tips and interveinal spots on pandoras box. clones look overwatered or overfed? potassium def was a worry.

Please Help, Any additional info needed just ask. Thanks

Edited July 15, 2012 by GenePerfect

[Frazz]

so you using potassium nitrate, calcium nitrate, trace elements in addition to DM a&b? , cause that would be overfeeding imo ...

and bring the pH back to 5.8 -6.0 in straight perlite, flush with PH adjusted water then resume feeding DM a&b only @ 900ppm

though im no authority on coco , ive heard the guys who know reccomend coco specific nutes

 

just my 2cents worth

and welcome to OzStoners

[Haratio Hornblower]

Flush

flush

flush

killing with kindness

[El Gato]

I would feed coco nutes too and other nutes have a hard time bonding to the coco.

[Stix87]

like frazz said ph in the wrong range for hydro fix that and go from there

[jaikai]

Coco specific nutes

Ditch the addtives

Get your pH down to 5.8

PPM means nothing without knowing your brand of meter...use EC readings instead

 

JAIKAI

[GenePerfect]

Thanks for all the help guys. ill lower the ph. cut back to dm a+b and look at getting an ec meter. thanks for the fast help!