First grow problem

M

Martin1980

Member
Growing 4 auto plants in plagron lightmix. They are 4 weeks old and just started to develope pistils. The problem is that lower leaves are turning yellow with strange colour spots. You can see in a photo. They got ghe flora series nutes at half strengh yesterday and calmag 5ml per gallonAny advise?
 

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hotrodharley said:
Oh hell yeah. Put it back into veg and let it recover.
Click to expand...

Your point is proven, That's a trade people are willing to make when they get into autos.

I personally like to buy regulars and choose my phenos, raise mothers, and take clones.

Just saying that autos aren't as bad now-a-days as they were 5 years ago
 
Martin1980 said:
I don't think that I'm overwatering, because I water when pot is lightweight.
Click to expand...
Sounds good. I was worried you were talking about watering right after you already had to try and sort the nutes. That would just give you two problems instead of just the original one.

I also use the "feel the weight" technique (or wait till I see some drooping) for telling when to water. Works like a charm.
 
Looks to me like a PH issue. That will cause nute deficiancies as the plant can't absorb different nutes at certain PHs. I'd suggest checking the PH of the water going in and the run off coming out to get an idea of what the PH in the root zone actually is. Soil will naturally buffer ph to an extent, but if it gets off it can still cause issues.
 
Thundercat said:
Looks to me like a PH issue. That will cause nute deficiancies as the plant can't absorb different nutes at certain PHs. I'd suggest checking the PH of the water going in and the run off coming out to get an idea of what the PH in the root zone actually is. Soil will naturally buffer ph to an extent, but if it gets off it can still cause issues.
Click to expand...
Thanks for comment, I ph water from day 1 at 6.5, the run off is 6.5 +-0.1 on all plants.
 
Excellent sounds like your on top of that. It might just be hungry, it was just an idea based on your attempts to feed it already.
 
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