Over feeding with PureBlendPro..

[Bulénath]

My two flowering plants are 2/3 finnished, and 1/2 finnished. The medium is 33% each perlite/wormcasting/blackgold orgainic soil. I have been feeding 150% strength Pure Blend Pro Soil formula without any problems and I feed with each daily watering. Then I bumped it up to 200% for 10 days. On the 10th day the leaves were shriveling up and the cola's single leaves are browning. It looks as if the overfert may start to destroy the actual buds, but it hasnt reached that full blown point. I have been feeding straight water for the last two days, hoping it will help. The 2/3 finnished one may have to be harvested early, at day 65 of 85.

My main concern is the 1/2 finnished plant, currently day 63 out of 133.
She is slightly over feed, but not to the point that its causing her to suffer..yet.

When is appropriate to start feeding again, and what strength reasonable for a re-start? Any other suggestions are appreicated. Thank you for any and all help!

 

[aeric]

whoa....lucky they are alive!

You don't feed every day in soil. There are several strategies but the main one is to feed every other watering, plain (pH adjusted if needed) in between. 15% runoff from the bottom of the pot. Wait till the top inch or so looks dry. Another: Like in a drip situation you can feed once a week deeply with the 15% runoff, then plain water lightly daily 1-3 times per day or once per day, giving just enough so that they are dry before u want to water them again. Apologies if u already know this stuff.

The only situation where I can see them even needing 200% is when pumping them with CO2 in a hydro setup, and the environment is perfect. The bottle directions are pretty accurate for most folks it seems. I halve them in veg. usually, then 2/3 strength (20 mil/gallon) in flo with no problems. But your situation is not the same as mine. Texas Kid has a sticky thread in the organic hydro section that may be of some help to ya.

 

[Bulénath]

Thanks aeric.
I might have forgot about feeding every other day, but since you mentioned it, I believe that was my last regime. Last grow was perfect. The bottle states "best if used with every watering".

The last two days they got plain tap water. I dont want to over-use tap water, or under-use ferts. What is everyones opinion on feeding every other day starting at 1/2 strength? and working up very, very slowly?
Today I will use plain tap water for the third day in a row.

 

[aeric]

Sounds like a plan. I noticed they say that feed every watering thing...they mean for soilless or hydro. They need to be more specific!

 

[SEEDYNONO]

don't listen to the pbp bottle.

my first grow i ran in ffof and perlite and fed with pbp and lk and cal/mag. i used the recommended doses every watering and ended up with stunted overferted plants with what i thought at the time were deficiencies but were actually only lockouts. my buds started to yellow and slow growth and never really recovered even after flushing.

ran a second grow with the same soil and setup but held way back on the pbp regimen. i gave them at most 3-5ml per gallon of bloom during flower every other watering (instead of 30ml every like the bottle says.. plus lk @ 15 mixed into the same gallon) and lk only gets used once or twice the whole time in a small 5ml dose in its own gallon of water. results spoke for themselves. the ffof had basically everything in it already to get the ganja grown.. this round i had almost no yellowing except at the very end with a few very low fan leaves. had no tips burns. had no slowing of growth. had denser, fuller, tastier nugs.

moral of the story is be very very cautious with liquid nutes! they can easily cause more problems than they 'solve' unless you know how and when to use them (only when you are sure the plants NEED more food!) its very common to mislabel a problem as a deficiency that can be remedied with more nutes. truth is real deficiencies come on slow and can be fixed slowly without much harm to the buds. if you have problems coming on fast and you are feeding with liquid nutes its usually a lockout cause by the nutes!

 

[Guest423]

why did you want to feed them so much anyway? more nutes don't equal bigger buds or higher yeilds like some people think...your basically wasting money and hurting your plants....1 rule is less is better then more....if your using a new product or strain start out on the smaller side and work your way up until you find what works best.

 

[SEEDYNONO]

yeah true time2unite.

i think the problem is when we say 'start out low dose and work your way up' they start feeding with 1/4 or 1/2 strength right away every watering. which depending on your medium that could be way too much already.. and could cause a lockout or tip burns even though this pbp is organic based.. anything liquid i find can be dangerous and can quickly upset a soil mix. ph also becomes a big factor as nutes can change the ph and even chemical ph adjusters in small amounts can upset soil on their own as well.

so now the concept says they need to start working on up since the plant has yellowing it must be deficient! then the feeding increases and the problems increase with it since the nutes caused the problem. thats how people end up with problems and are feeding their plants 200% strength every watering trying to fix it.

it takes a few grows but after some experimentation you start to understand the whole concept of what are true deficiencies and what are overfeeding/lockout problems.

strains can be vastly different but i find only rarely is a plant going to be happy with loads of liquid nutes being shoved up its roots if its growing in an organic soil setup.

 

[Guest423]

my question is what is in the blackgold organic soil? i've grown great crops barely using any nutes with only earthworm castings.....u take the organics that already in the castings and the organics already in the blackgold then add 200% pbp thats major overkill waiting to happen

 

[pieceofmyheart]

...and you water every day also?