Can't escape the rust spots on leaves!

J

Jkooper

Active Member
I am mid week 3 of veg and rust spots have been haunting me since week 1 and I tried nearly everything.

A quick background on my setup:

First time DWC/Autoflower strain
Flora Trio GH 1/2 teaspoon/g all 3 first 2 weeks (1 teaspoon/g cal-mag)
Increased to 1 full teaspoon/g beggining of week 3 (1 teaspoon/g cal-mag)
Currently switched to a diluted Lucas formula 0-5-10 with no cal-mag as of 2 days ago.

I switch to the lucas formula because I am assuming I have a phosphorus deficiency since I use cal-mag. I think my roots got a tad darker after the first day with the lucas formula. I've been really lucky with my ph, its been ph perfect 5.8 the whole time with no drifts. In my photos I have a few pictures of the rust spots in cluding a leaf at early growth and recent leaves (had to even clip a fan leaf). Also over night I got some yellow spots on leafs (assuming lack of mag?) and some glossy leaf tips (not sure what that is).

It might be too soon to know if the new ration will fix my plant but I'm running low on options here and the last two days has still been forming rust spots! Haven't tried a flush with just ph adjusted water since its an autoflower. If I do a flush how long should it be for with an autoflower? Should I raise the ph to absorb more calcium? Ive made so many mistakes it seems but I refuse to give up. Help please!

I cam a far way since my first post.
 

Attachments

9

93OG

Well-Known Member
Looks more like nute burn than a cal deficiency, but I don’t grow autos. I would give here only water for a couple weeks.
 
J

Jkooper

Active Member
93OG said:
Looks more like nute burn than a cal deficiency, but I don’t grow autos. I would give here only water for a couple weeks.
Click to expand...
You can't go only water for weeks with autos. But yea, probably my first and last time growing autos.

Ravnik68 said:
Ive had problems with that once my Ph goes way wrong.
Click to expand...
I adjusted the ph to 5.5, I can't find any accurate information online about nutrient intake and ph, they all same different things (charts, forums, ect). I figure a .3 change won't help too much. I seen convincing evidence that ph should remain at 5.2 and some loose evidence to keep it at 6 basically.
 
rkymtnman

rkymtnman

Well-Known Member
see how your leaf margins are pointing up like that?

grow room temps are?

pic of roots would help too
 
J

Jkooper

Active Member
rkymtnman said:
see how your leaf margins are pointing up like that?

grow room temps are?

pic of roots would help too
Click to expand...
Forgot the root pictures, not translucent white but a white and a hue of brown.

Now that my meter is +/-0.1 ph, I topped the res off with R/O and up'ed the res to 5.9. I didn't mention, but I added 5ml (10ppm) of colloidal silver to the res originally to keep both any good or bad bacteria out. New leafs show lack of mag (green veins and yellow tint in between) but I added 10ml cal-mag to the 4 gallon solution yesterday.

At this point I think I'll wait to see what happens. When I originally measured my ph at 5.8 if would have been at 5.6 which I wouldn't think would be much of an issue either...
 
J

Jkooper

Active Member
rkymtnman said:
never heard of that before. you sure that doesn't interact with any of your nutes?
Click to expand...
This is a pretty bad experiment for a first time hydro grow, I know. But it was fine with it the whole time up till now.

Sorry I got back so late on this, I stopped the rust spots from spreading, however the growth has been stunted since I posted this thread originally, which is probably why the rust spot stopped....

It's in its first dark cycle now (4 hours) I need the plant to stretch a bit since the nodes have been tight the whole way. Hoping this may strengthen the roots with 4 hours of dark everyday even though the res should be in the upper 60's.
 
You must log in or register to reply here.
Top