Under feeding?

After noticing the plants loosing their green colour, Ive feed them some organic grow nutes, after 2 feeds the bottoms are still not darkening up, should i up the dosage? dont want to burn em

I would bet that you are haveing low soil PH. That would be my first guess after you fed them already. You should know the ph of your soil?? Is it over 5.7 - 5.8. Nitrogen lockout starts at about 5.7 in soil. I had this happen and added 2 tablespoons soil sweetener (hydrated Lime...the white powder stuff that looks like blow but dont snort it...hehe ok bad joke) Anyway....2 -3 tablespoons in a gallon of water will bring the soil ph up to 6.3 if its down below 5.7. At least it did for me...and then my plants were able to take up nitrogen again. I am assuming that not only the bottom leaves are light. If its nitrogen def then it will be the upper leaves also. A few yellow lower leaves is normal for plants when healthy sometimes.

1.Check your soil ph
2. take picture and post it
3. Dont feed anything untill the soil has been checked

Just my 2 cents

Grasshopper

lazaah said:

After noticing the plants loosing their green colour, Ive feed them some organic grow nutes, after 2 feeds the bottoms are still not darkening up, should i up the dosage? dont want to burn em

Click to expand...

How old are your plants? I had the same problem with my Apollo 13 plants after a transplant. I gave them a half dose of nutes and it helped, but they were still this olive drab green/yellow color. I dosed them with a normal dosage and they perked up and took off. They haven't stopped growing since.

What nutes are you using, what is the recommended dosage, and how much are you giving them?

6 weeks in 3.5in pots, prefert'ed soil, feeding them with Natures Own guano supergrow, theres no recommended dosage for the powder in water so I mixed 1/2tsp with 6L water.

When taking the photos i noticed the new bottom growth is green, but I havent managed to save the fan leaves, and both the plants are overall light green, would like to see them nice and dark!

Heres photos, suggestions welcome

Edit: transplanted into these pots about 3 weeks ago, feed last thurs

Will post pH runoff tomorrow as watered em this morning

The tops are looking good. I had some that were like that that ended up dying off and I just took them off the plant. I would say that as long as the tops and new growth of your plant is green and vibrant, you are in the good. Sometimes, leaves just run their course and die.

<Grasshopper> said:

I would bet that you are haveing low soil PH. That would be my first guess after you fed them already. You should know the ph of your soil?? Is it over 5.7 - 5.8. Nitrogen lockout starts at about 5.7 in soil. I had this happen and added 2 tablespoons soil sweetener (hydrated Lime...the white powder stuff that looks like blow but dont snort it...hehe ok bad joke) Anyway....2 -3 tablespoons in a gallon of water will bring the soil ph up to 6.3 if its down below 5.7. At least it did for me...and then my plants were able to take up nitrogen again. I am assuming that not only the bottom leaves are light. If its nitrogen def then it will be the upper leaves also. A few yellow lower leaves is normal for plants when healthy sometimes.

1.Check your soil ph
2. take picture and post it
3. Dont feed anything untill the soil has been checked

Just my 2 cents

Grasshopper

Click to expand...

Regarding nitrogen def: I'm gonna have to go ahead and disagree with you that a nitrogen def will show on both lower and upper growth. It might, but only if the deficiency is fairly advanced in stage. As you probably know, N def starts at the lowest growth and works its way up the plant starting with the lowest main fan leaves and working up from there and then it starts again on each main branch again working its way up from the bottom.

yeah, pretty sure its N def, it only affected the fan leaves from bottom up, and after a feed it seems to have reduced. My soil run off is a bit high at about 7 though, pain in the ass as one is higher than the other by about .4, can i top dress with something to bring the pH down? (epson salts, lime?). Or should I just water with a lower pH?

Cheers guys!

Hey bro I used the guano supergrow its great stuff but I feed with the liquid nutes not powder so I'm not too sure what dosage to suggest to ya but this year something I've done is PH my water down to about 6.5-6.9 before feeding and my runoff has been very low PH since the start (PH 5.0 at the start of my grow with pot power potting mix) but never saw any deficiencies and very fast dark green growth for some reason so I never used lime... Its now been about 2.5 months of watering thru with PHed water and now the runoff is finally about 6.0 so its slowly getting closer to where I want it.

Last yr I used a cheap potting mix from the warehouse and didnt PH any of my water and I had major nitrogen deficiencies. My tap water is like 8.0PH so it must of gone too high last yr. A great cheap quick fix to some nutrient problems that I can recommend is go to the warehouse buy "Watkins Bounty" 1litre of it is $20 or a 250ml bottle for like $7 and just mix like 2-3ml per litre for a plant your size and water with that it has NPK 10-3-7 so its great for vegging and also has all the micro nutes in it. Its a great general fertiliser I use it in my general garden and you can also safely foliar feed with it Hope this helps