PPM Q:

P

Penny wise

Active Member
I keep hearing to use my advanced nutes (or all nutes even) at 50% in DWC

my question is WHY?

Not burning my plants, my plants buy their own nutes so wastefulness is not a concern,

Any insight?

I'm using their ph perfect line of course (they dont even stock it not ph perfect) so please no
Outdated info from those who ran their old formula ;)

EDIT: most often I see ppm suggestion 700-800. Right now at week 2 flower I'm at 1200-1300
 
jcdws602

jcdws602

Well-Known Member
PPM varies greatly depending on strain,environment,and phenotype.Don't let a bottle or anyone tell you how high or low your ppm should be,listen to your plants.

For example I am running super silver haze right now and am in 3rd week of flower and they are loving life at 500ppm right now.

Also sometimes high ppms wont burn your plants,but your plants will be super green.....this is a sign of n toxicity which will diminish yield and delay flowering.
 
Flagg420

Flagg420

Well-Known Member
well the half value is usually based on the online feeding schedule, which is enough to feed a redwood sometimes.

Also dont confuse DWC with RDWC there are a few subtle notes n details that are different. The way I understand it, in RDWC you use a lower concentration of nutes cuz of the way its recirculating and at a high O2 level.

That being said... what are you running for your numbers that work? (And if it works, dont fuck with it!)
which line, and how deep?

(bloom a/b, conn. a/b, trio, which extras, etc.)
 
Flagg420

Flagg420

Well-Known Member
I have no idea what my PPM levels are in my dirt plants. I follow the AN schedule, often buffering with calmag, molasses, something liquid seaweedy..... things vary... run the conn. in flower.

I put about a shot glass in a 2.5gal jug of water A/B, and half a shot of the others in the schedule...


Am I overdoing it, and spending on things i may not need? Yea, probably...

Is it working just fine? Yep.


Now that I am re-starting a DWC bucket (to get my feet wet so to speak) before a 4 site RDWC undercurrent system.... I find I need to care a lot more about the numbers lol
 
FrozenChozen

FrozenChozen

Well-Known Member
jcdws602 said:
PPM varies greatly depending on strain,environment,and phenotype.Don't let a bottle or anyone tell you how high or low your ppm should be,listen to your plants.

For example I am running super silver haze right now and am in 3rd week of flower and they are loving life at 500ppm right now.

Also sometimes high ppms wont burn your plants,but your plants will be super green.....this is a sign of n toxicity which will diminish yield and delay flowering.
Click to expand...
I have some week 6 flower @900 ppm and some on week 5 that like 350ppm
 
Yodaweed

Yodaweed

Well-Known Member
Penny wise said:
I keep hearing to use my advanced nutes (or all nutes even) at 50% in DWC

my question is WHY?

Not burning my plants, my plants buy their own nutes so wastefulness is not a concern,

Any insight?

I'm using their ph perfect line of course (they dont even stock it not ph perfect) so please no
Outdated info from those who ran their old formula ;)

EDIT: most often I see ppm suggestion 700-800. Right now at week 2 flower I'm at 1200-1300
Click to expand...
By giving them less they can use more of it, I used to do the same you do an I use advanced sensi grow A+B , then I went half and noticed my plants grow faster, drink a lot more, and when I do weekly rez change I throw away less nutrients. When using full strength and changing your rez you end up throwing out so much unused nutrients.
 
firsttimeARE

firsttimeARE

Well-Known Member
1200ppm is a lot...

But it would be helpful to know which conversion rate you are using. Which is why PPM is a pretty useless number without it. It could be 2.4EC, 1.7EC. Both are high numbers. 1.7EC isn't too bad, ive gotten that high before.

Im using 400ppm at a conversion rate of .5 and im beginning to see dark green leaves.
 
Yodaweed

Yodaweed

Well-Known Member
Over nutes are bad and cause root burn if you lower the ppm to better levels your plant drinks a ton more water because it forms a more robust root system, also when you put tons of nutes in your water your just lowering water quality, plants that a properly grown can live for weeks on water only, at least mine can.
 
SnaFuu

SnaFuu

Well-Known Member
Yodaweed said:
Over nutes are bad and cause root burn if you lower the ppm to better levels your plant drinks a ton more water because it forms a more robust root system, also when you put tons of nutes in your water your just lowering water quality, plants that a properly grown can live for weeks on water only, at least mine can.
Click to expand...
Live, yes.

Grow dank nugs, no.
 
M

Medicationist

Member
It really depends to be honest. Too many factors like what water you are using, if you keep on top of your PH, or strain changes this number a lot. After week three and using SPA I will start around 900ppm and just bring it up about a 100 every few days. Once you start seeing burn or toxicity, you know the last ppm amount was correct. Record that ppm and veg day for future runs. Every two weeks repeat this process so you have good ppm amounts for each couple weeks of a grow cycle. Hope this helps.
 
Logan Burke

Logan Burke

Well-Known Member
I just read the 1st post, but it's really about what works for you. Noone can say x number is good for your plant with certainty. I normally start low and build my way up until I see the tips of the leaves burn just a little, then bring the nutes back just a little. I too run Sensi A+B pH perfect, works well for me. I also use Big Bud.
 
silusbotwin

silusbotwin

Well-Known Member
I feed 1400 ppm solution of Heavy16's full line from week 1 of flower and I reach levels of 1600+ ppm by week 3-4 and I have never seen a single burned leaf tip. Of course H16's cascading nutrients help alot with keeping them from burn. The manager of the hydro store that convinced me to switch to Heavy16 told me that he has some strains that really benefit well from 1800-2200 ppm! I know it sounds unbelievable but if you understand the chemistry of H16, you would understand how it is possible without burning plants.

Who else uses Heavy16 and what is the maximum amount of ppm you use?
 
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