Rust spots on leaves.

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!

Sorry about the duplicate post, first one was in the wrong sub forum...
 

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farmerAl

Active Member
I have the same symptoms in FF soil on newer plant. I only fed water to most and some diluted GH to a few that began looking sick.
It's also happening in a few babies I have in hempy pots.
 
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