Help Multiple Strain Problem Leaves Rusting

[4saken]

Hey guys

I have a problem with 4 out of the 8 bagseed plants currently about 6 1/2 weeks into flowering. The leaves are yellowing and browning from the inside of the leaf, in some cases getting very bad. The problem is at the top of the plants and goes to the bottom.

They are in 5 gallon pots with FFOF soil. Watered approx every 3 days with 1/2 gallon with tiger bloom, superthrive, molasses, and beastie bloomz. The water starts out at about 7.5ph, but after the nutes it seems to be around 6.7. (Shitty color PH tester)

Thanks
Joe

 

[Weedninja]

2 questions first: Are you feeding them all that stuff every watering and are you using straight FFOF?

 

[4saken]

2 questions first: Are you feeding them all that stuff every watering and are you using straight FFOF?

Yes and yes. It doesn't look like burn to me though, is it a toxicity?

 

[JoJoDancer]

Too much PK getting toxic. Let's see 7.5 ph Irons getting locked out causes rust. Flush with Epsogrow (magnesium sulfate) 2tbs per gl. Then add chealted micros make sure it has iron. Leaves won't get better but won't get any worst.

Goodluck

 

[Weedninja]

I think that you are overnuting with P&K like JoJo said. It looks like you're locking out one of your non-mobile elements, probably copper. I also agree that a flush isn't a bad idea. Other than that, I would pick one bloom nute and use that once a week, tops. I would ditch the superthrive. The molasses is probably ok as long as it's unsulfured.

 

[Weedninja]

I forgot to mention that you might want to add some perlite next time around. FFOF is pretty hot soil to begin with and soil compaction can also add to nute problems.