big_expectations!
Active Member
Plants all seem to be growing well but getting alot of yellowing in the bottom and older leaves. Any and all help appreciated ffof soil GH floratrio nutes always water at 6.5 ph
Deficiency?
- Thread starter big_expectations!
- Start date
Phytoplankton
Well-Known Member
Those nutes are synthetic, have you done a flush to remove the accumulated salts? It looks like it needs a bit more N, but N may be locking out from the salts. It's not the only possibility, but it's an easy one to fix. Flush the plants with regular water, 3x the volume of the pot. let em dry and then go back to feeding.
big_expectations!
Active Member
They are in 5 gallon pots so your saying put 15 gallon through each one? I suppose it need to be ph balanced as normal?
Phytoplankton
Well-Known Member
Yes, 15 gallons per 5 gallom pot. Doesn't really make too much difference, unless the tap water is brutally alkaline or acidic. But it certainly won't be a problem to PH the input water for flushing.
HydoDan
Well-Known Member
You're adding nutes to an already nute dense soil.. Overfed
How to Identify & Fix Cannabis Nitrogen Toxicity (with Pics) (growweedeasy.com)
How to Identify & Fix Cannabis Nitrogen Toxicity (with Pics) (growweedeasy.com)
big_expectations!
Active Member
I was under the impression that this soil only has enough nutrient content for around 3-4 weeks of plant life
HydoDan
Well-Known Member
Some batches are hotter than others and usually contain about 6 weeks worth.. The burnt tips and clawing are from overfeeding..
big_expectations!
Active Member
I thought it seemed like mild nute burn but in between feedings they tend to have more yellow pop up in them..those pics are from 2/4 this pic is 2/7
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Johnny15
Member
How much of each have you been giving and are you watering till runoff?
Phytoplankton
Well-Known Member
In my experience with FFOF (about 9 years worth), I've never seen the intial nutes last more than 3-4 weeks.
Johnny15
Member
Same here.
big_expectations!
Active Member
Just following gh feed chart..don't have a ppm or ec meter so giving suggested ml per gallon and adjusting ph after to 6.5 and yes till runoff
Johnny15
Member
Following the GH feeding chart in FFOF is your problem. Looks like lockout. I see nitrogen toxicity and potassium deficiency. If you want to use salts you're better off using a sterile medium. Flushing the soil might help but you should check the ph too.
big_expectations!
Active Member
Putting water in at 6.5 ph but runoff is coming out between 5.3 to 5.8
Johnny15
Member
Soil ph is low.
big_expectations!
Active Member
I'm at end of week 5 of flower about halfway done..anyway for a quick fix?
Johnny15
Member
Stop using ph down.
Phytoplankton
Well-Known Member
Don't chase soil runoff!!!! FFOF is just fine, don't mess with it. PH what's going in and maybe back of the nutes by 25%, see what happens.
Johnny15
Member
I agree with runoff not always being accurate but if it's coming out at 5.3-5.8 when 6.5 water is going in his soil ph is a bit low.
big_expectations!
Active Member
Yellowing is progressing I think
