Still having plant problem - flush or feed? pics

sweetcheekz

Active Member
So I flushed like I was told...a lot. Now more and more leaves are looking like the pics. Should I flush more....feed more, or treat something else? I gave her quarter strength feed 3 days ago.

Once again my room is as so;
73-83 degrees F
40-55% humidity
11 days into flower under 1000w hps
1500 ppm co2
Good air movement
 

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sweetcheekz

Active Member
Sry Jack I initially forgot photos, you read post too fast! haha
PH in and runoff after flushing was 6.5-6.8. I plan on PHing to 6.7 for feed. This is my ONLY plant in soil and prob will be my only plant in soil for at least a year.
Nutes are Botanicare line - pro bloom, calmag, liquid karma and sweet.

DrFever, thanks once again. I will give it a full feeding now and see what happens. Do those leaves look like Calcium def. or something else to you? Also, with a 3 gallon (I think?) pot, would you suggest a gallon of water per feed or less? I've been giving it 2 quarts per feed
 

Jack Harer

Well-Known Member
With the pH that low, I'd say it's a phosphorus def. P starts getting locked out around 6.5, but that particular pheno may just require more P than most? Could be Ca, too tho. Be careful with adding too much Ca, as it will start locking out Mg.
 

sweetcheekz

Active Member
Ok...we'll I'll give it a feed and up my PH in to 6.8. If in 4-5 days it still is getting worse I'll flush again and aim for a 6.8 in 6.8 runoff.
Thanks guys and I'll check back with some info once I have some :)
 

Jack Harer

Well-Known Member
Your pH ain't really that low. I've never had probs with pH before. I'd say it's more a pheno thing. That particular plant just loves more P than most. pH usually ain't a real prob in soil. I'd adjust it in this case tho....
 

sweetcheekz

Active Member
Well just fed and noticed the runoff was low again. 6.75 in 6.49 out.
Should I flush now or just see how things go for a couple days?
 

Jack Harer

Well-Known Member
You aint gonna change the soil pH by flushing, unless the low pH is caused by salts. How much have you flushed? If you've done 3 or 4 times the pot capacity, then you've done all you can do. you MIGHT try watering in some lime.
 

resinousflowers

Well-Known Member
With the pH that low, I'd say it's a phosphorus def. P starts getting locked out around 6.5, but that particular pheno may just require more P than most? Could be Ca, too tho. Be careful with adding too much Ca, as it will start locking out Mg.
Phosphorus gets locked out of soil growing at ph levels of 4.0-5.5
Phosphorus is absorbed best in soil at a ph level of 6.0-7.5 (wouldn’t recommend having a ph of over 7.0 in soil) Anything out of the ranges listed will contribute to a Phosphorus deficiency.
 

Jack Harer

Well-Known Member
These are GUIDELINES, but you can plainly see that in soil, by 5.5 P is almost gone. 4.0 and there is very little, if any, available.
At 6.5, P is just starting to get locked, but not bad at all. Like I said, it's prolly just that pheno.



 

resinousflowers

Well-Known Member
i looks like a manganese deficiency.so you should foliar feed with nutes containing manganese.only use no more than half strength or it might burn you leaves.other nutrients that have Manganese in them are: Manganese chelate, Manganese carbonate, Manganese chloride, Manganese dioxide, Manganese oxide, Manganese sulfate, which are all fast absorption. Garden Manure, Greenssand are both good sources of manganese and are medium/ slow absorption.
 

sweetcheekz

Active Member
Awesome, thanks all. I've definitely flushed more than 3-4x pot capacity (more like 6x).
I'll leave alone for now, if in a couple days I don't see any changes, or it's getting worse, I'll try some other suggestions.
 

sweetcheekz

Active Member
Awesome link, thank you. I do agree with you it does look like manganese def from that pic. Also a little above that is calcium def which it somewhat looks like to (I think more mang like you said)
I'll see what I can do about that. Thanks for stating the sources too, that'll help.
 
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