ppm, can someone explain the limits

[chaoticbliss36]

i am just wondering if there are any limits that should not be exceeded....is it a reflection of plant size? i've been pushin 2000 with this Humboldt line... only cause so much is included in the line.

[calinycgrow]

Thats going really high. I guess if your plants are loving it keep going but thats getting into the danger zone. Any nute burn?

[Infamous 1]

Originally Posted by calinycgrow

Thats going really high. I guess if your plants are loving it keep going but thats getting into the danger zone. Any nute burn?

I agree with calinycgrow. Keep it up if it can handle but if you see signs of nute burn i would flush and then back it down... Good luck...

[NorCalHal]

An issue you might run into is Nute lockout. What that means is, if you feed with a high ppm from when the plant is young, it will accumulate nutes within the plant. Once it "peaks" out, it will go into a stage called Reverse-osmosis. Your plant will then look and act like it is not getting anywater and will dry up very quickly and die. This can happen at any stage. You could be 6 weeks into flowering and she will just dry up and die. Frustrating to say the least.

Some strains can handle it, some can't. It is allways better to run lower ppms then higher. More is not better.

[gonejah17]

2000 is way too high IMO

[mordgrow]

in the end, your plants will let you know whats up, while 2k is pretty high, its not too much over the recommended crap that i see on the labels (I'm usually 500ppm below that haha) if your plants are doing fine, your prolly alright, but there's no need to give em that much really, over feeding doesn't seem to do anything good, remember your giving these things a mixture or SALTS, and too much salt is never good.

[Dewave]

Originally Posted by mordgrow

in the end, your plants will let you know whats up, while 2k is pretty high, its not too much over the recommended crap that i see on the labels (I'm usually 500ppm below that haha) if your plants are doing fine, your prolly alright, but there's no need to give em that much really, over feeding doesn't seem to do anything good, remember your giving these things a mixture or SALTS, and too much salt is never good.

Bingo, it is a matter of economics, esp in hydro, I can give my AK-47's 2000 PPM and get dark, nearly black fan leaves. But if I give them 1200 PPM I get nearly the same color fan leaves. However weight is the same.

So why waste the money spent on nutes? That shit ain't cheap!!

Once you find the max PPM a strain can take, the next goal should be what is minimum PPM it can take without sacrificing weight. And along that journy you'll find out what is it's special needs are such as mag, phos, Fe, nitrogen.... it's called dialing it in.

Dewave

[PURPLE_TREES]

+111111111

[chaoticbliss36]

this helps a lot... does any one know the limits for dissolved solids in coco?

[Dewave]

I use Coco as well, Coco is just another hydro medium that provides no nutritional value for the host plant. Soooo... I provide mine, dunno about others, 300-600-900-1200, young plant, veg, late veg/early flower, flower.

The plants will tell ya when ya over do it or if you do not provide enough.

Dewave

PS. Watch your Ph as well.

[chaoticbliss36]

my ph has been all over the place, i am just now workin out the final kinks, to bad it wasn't earlier... but my disolved solids has been well over 2000 ms but my nute line has like 6 organic products that go into it so my disolved solids is real high... do i just need to flush more often or something?

[Dewave]

Originally Posted by chaoticbliss36

my ph has been all over the place, i am just now workin out the final kinks, to bad it wasn't earlier... but my disolved solids has been well over 2000 ms but my nute line has like 6 organic products that go into it so my disolved solids is real high... do i just need to flush more often or something?

Take the recommended dosage of all the nutes and reduce it by half or more... you're using organic in coco? I've seen it done, just never understood why. Coco along with using hydro nutes such as GH and the lucas formula makes it easy and I only use 2 parts, micro and bloom.

Dewave

[IMgreen]

I agree with dewave on the lucas formula in coco being a great combo, but I go up to what the light can handle ppm wise after seedling stage

currently under HPS ppm is between 11-1400 most of the time

GH Floranova bloom is easy breezy, it's micro and bloom in one bottle and can be used from veg through flower so it's really economical

I only have a single plant in coco with FNB but damn she is a fine looking plant imo!

Much easier to grow than all my dirt grows were but it dries out faster (the only downside) and I coulda prolly avoided that with more vermiculite in the mix

[ocitown]

Originally Posted by NorCalHal

An issue you might run into is Nute lockout. What that means is, if you feed with a high ppm from when the plant is young, it will accumulate nutes within the plant. Once it "peaks" out, it will go into a stage called Reverse-osmosis. Your plant will then look and act like it is not getting anywater and will dry up very quickly and die. This can happen at any stage. You could be 6 weeks into flowering and she will just dry up and die. Frustrating to say the least.

Some strains can handle it, some can't. It is allways better to run lower ppms then higher. More is not better.

Originally Posted by IMgreen

I agree with dewave on the lucas formula in coco being a great combo, but I go up to what the light can handle ppm wise after seedling stage

currently under HPS ppm is between 11-1400 most of the time

GH Floranova bloom is easy breezy, it's micro and bloom in one bottle and can be used from veg through flower so it's really economical

I only have a single plant in coco with FNB but damn she is a fine looking plant imo!

Much easier to grow than all my dirt grows were but it dries out faster (the only downside) and I coulda prolly avoided that with more vermiculite in the mix

Keep in mind the fact that PPM is only a conversion from the REAL measurement EC or CF.

The PPM conversion we are talkin about is ECx500 and if you just happen to have a PPM meter which converts the EC by x700 your reading will most certainly show much higher than it actually is.

For example you may have a PPM of 1400 and your meter could read 2000 if its converting ECx700.

You can use a PPM solution or just look into your meters conversion.
You may be correct at 2000 PPM but i have seen this trick many novice gardeners.

[Dewave]

Excellent point, Ocitown,