Please help Yellow spots on leaves

hangerr

Active Member

• Jan 28, 2014

• #1

These are about 3 weeks old. In dwc 5 gallon bucket. Ph is at 5.8. PPMs are at 450. That includes 150 ppms from my tap water. I'm using floranova, cal mag, and super thrive. Any advice to what is causing the yellow spots. Thanks fellas.

 

superstoner1

Well-Known Member

• Jan 28, 2014

• #2

Turn the leaf over and look for little tiny bugs, some spider mite damage will look like that. If not bump the nutes another 150-200.

 

hangerr

Active Member

• Jan 28, 2014

• #3

Thanks for the reply. So you think i need more nutes?

superstoner1 said:

Turn the leaf over and look for little tiny bugs, some spider mite damage will look like that. If not bump the nutes another 150-200.

Click to expand...

 

hangerr

Active Member

• Jan 28, 2014

• #4

No bugs found

 

Twitch

Well-Known Member

• Jan 28, 2014

• #5

yea bump up ur nutes

 

W

white1340

Member

• Jan 28, 2014

• #6

Check very carefully for mites. Use a magnifying glass, the little buggers are like crabs and sometimes can go undetected with the naked eye. Yellow dots ring the spider mite alarm.

 

hangerr

Active Member

• Jan 28, 2014

• #7

No mites found. I had them before so i know what to expect. I will bump up the nutes to see what happens. thanks

 

B

BSD0621

Well-Known Member

• Jan 28, 2014

• #8

Are you sure there are not mites or thrips on the underside of the leafs? that is a classic sign of a bug sucking the juices from the leafs...
http://www.growweedeasy.com/sites/growweedeasy.com/files/spider-mites-cannabis-yellow-spots.jpg

I wouldn't go upping your feed schedule just yet.

 

hangerr

Active Member

• Jan 28, 2014

• #9

I looked with a loupe everywhere. Not one mite. I aslo sprayed the leaves with spider mite killer. Just in case. I dont think its mites. I mean i hope not.

 

hangerr

Active Member

• Jan 29, 2014

• #10

Well fellas im haapy to say they are doing better. I took the advise and bumped nutes up from 450 ppms to 600 pmms and sprayed for mites. When i got off worked, i checked the ppms and they went down to 550. The water level also went down. Seems like they were starving. How often should i increase ppms as the weeks go by. Thanks again.

 

lushgreen

Active Member

• Jan 30, 2014

• #11

Looks like a case of spider mites. Never seen a nute deficiency do that but mites will.

Happed to me on my first grow, put the seedlings outside for some winter sun during the day. Whole lot were infected.
Bit of mite treatment and they never returned.

 

hangerr

Active Member

• Jan 30, 2014

• #12

yes i sprayed for mites. If that was it then they are gone. plants is getiing bigger by the minute. Thanks