getogrow
Well-Known Member
as with SEVERAL other plant topics. Well said sir.
Which PH chart is the correct one?
- Thread starter Destroyer of chairs
- Start date
EvilScotsm@n
Well-Known Member
That's soil mate. This is hydro. He's growing in what's effectively an empty sponge.
It does nothing.
Treat soil the way that's best to treat coco and theyll be dead in a week. Be lucky if you can get to 4 nodes without killing them .
Note that the chelates that bind the nutrients in synthetic nutrients also expand the pH range the attached nutrients can be uptaken at. Kind of a beneficial side effect. To what extent for which nutrients is something I haven't delved into. The expanded range may be wide or slight, but it is there.
Alphonso OG
Well-Known Member
These guys ran their grow from 5.5 ph start to finish. I personally target around 5.8 ph
coreywebster
Well-Known Member
These multiple charts pissed me off for years.
However they just don't matter.
Just alternate feed in a range between 5.8 and 6.2 and your good in coco, if you go a point one way or the other it doesn't matter.
Don't lose any sleep over it.
EvilScotsm@n
Well-Known Member
I flicked to half way through and seen a plant with the 1 main cola 2 feet higher than the rest. He could've trebled the yield in the same time if he knew his stuff or could be bothered with a little training.
Nice looking plant but very inefficient way to grow. High cost, low yield, not a very good guy to take tips from imo.
ComfortCreator
Well-Known Member
My 2c on the charts is there are many types of growers...many dont know ph at all, most are content to know the effective range to set their water ph.
Some are scientists and for them the more detailed charts showing trailing off absorption as the ph rises and falls appear much more accurate to me. But the point remains that the ranges are all that matters, and plants adapt somewhat even out of range.
For newbies (like me) i strongly recommend reading Renfros soil ph thread. Short, to the point, and like all things Renfro includes a simple and straightforward action plan.
I just got the soil pen and will update in his thread once ive gone through a few adjustment cycles. It goes beyond ph'ing the water and gets past the mysteries of why the fxxx us newbies cant always keep our plants green...
Cc
Some are scientists and for them the more detailed charts showing trailing off absorption as the ph rises and falls appear much more accurate to me. But the point remains that the ranges are all that matters, and plants adapt somewhat even out of range.
For newbies (like me) i strongly recommend reading Renfros soil ph thread. Short, to the point, and like all things Renfro includes a simple and straightforward action plan.
I just got the soil pen and will update in his thread once ive gone through a few adjustment cycles. It goes beyond ph'ing the water and gets past the mysteries of why the fxxx us newbies cant always keep our plants green...
Cc
EvilScotsm@n
Well-Known Member
This dude ^^^^^ winner
getogrow
Well-Known Member
I was responding to his question about buffers, that is all. i made it clear you cannot do that in "hydro".
EvilScotsm@n
Well-Known Member
He's in hydro mate. If he listens to a soil grower he'll kill his plants.
DoubleAtotheRON
Well-Known Member
I don't have a lot of experience in coco... but in soil, I've used some peat based/bark mulch medium that wanted to crash early on. I'd get readings of 4.9 - 5.3ish. I experimented with feeding in at 12 ph mix to offset the soil, and bring it up. You can't fix/correct soil at 5.3 by feeding in 6.5, it just don't work that way. Feeding in at 12, then 10, then 8 corrected my soil for the rest of the run. Otherwise, I had to feed in at 7.3/7.5 to balance it out and "overshoot" the ph when the soil was freshly wet. As the soil dries out, the ph will drop back to 5.9 - 6.3... feed back in at 7.3 - 7.5, and it will be in that zone to uptake the nutes for that cycle. Sounds crazy, but it worked out great for me. This new soil im using now is not as fickle..I've only had to correct it at 8 max to settle it, and now feed in at 7.3 to get it to buffer at 6.5-6.8 .. runoff is confusing and misleading as @Renfro has said. You need to monitor what the root zone is actually experiencing with a quality PH meter like a BlueLab or Apera Instrument.
Destroyer of chairs
Well-Known Member
I'm just trying to get my head wrapped around all of this as good as I can. Good correct info is my quest
Excellent! All the confirmation I need
Noted. I will not try to go that far in my coco/perlite mix!
getogrow
Well-Known Member
Again , he already knows this. he is trying to help in general. your going to kill his plants worrying so much about them....
stalebiscuit
Well-Known Member
safe zone is above 6 below 7
in that range it just seems to work mo betta
in that range it just seems to work mo betta
Destroyer of chairs
Well-Known Member
Wait so, can I do the 5.3 approach or not?
EvilScotsm@n
Well-Known Member
No you don't. This Is a hydro grow.
Why does nobody on this site seem to know the difference between hydro and soil?
You don't need to monitor the root zone in hempys.
Just make sure what to put in is correct.
And make sure you never let the media go dry. Can water a 20L pot 6 times a day, 30 litres at a time if it makes you happy.
The more balanced nutes you feed it the steadier it will be. The more oxygen the plant gets and the better it will grow (to a point)
Everything that soil growers do is the exact opposite of what is required for hydro.
Stop confusing the guy.
EvilScotsm@n
Well-Known Member
Up the volume of feed mate. When the media dries out, the nutes turn back into salts and build up. Causes nutes to lock each other out and fries the ph which also causes lockouts.
5.7 at 500ppm /1ec or a little less going in.
If it's rising so quickly that your getting lockouts then you're not giving enough volume.
Can't drown a weed plant. It's literally impossible to over water unless you water with so much force that you physically damage it, or totally take the piss and give it 2000litres a day.
Soil growers get dramas cos soil is shit and doesn't hold oxygen very well. Therefor if they water too much the plants suffocate.
Can't do that with hydro though. The more you water the better it goes as they get more oxygen and can therefor breath better.
Under water and well... it usually looks like this.
ComfortCreator
Well-Known Member
Thats a lazy comment.
I suggested he measure the ph of his medium. I did not suggest he adjust anything...I said read Renfros thread and learn about soil ph.
If you want to police someone elses thread at least know what you are talking about, please.
EvilScotsm@n
Well-Known Member
I do mate and you've just said it again. You're telling him to learn how to ph soil. This isn't soil.
Literally every single thing you do to treat soil plants correctly is the wrong thing to do in a hydro grow.
The ph behaves vastly differently for vastly different reasons.
I'm not policing anything. Just trying to help the guy out.
This is why I got so confused when I started out as a coco/hydro grower.
Half the people telling me what to do were telling me to do things the soil growers way.
And it just doesn't work.
Coco/hydro is so ridiculously easy to do it's unreal.
You've just gotta sift through all the soil growers "advice" to be able to see it.
If I told soil growers what to do their plants would be dead before they had time to realise and send me abuse for it.
I'm not being a dick mate but every person commenting is mentioning soil and it's only gonna make his dramas worse.
ComfortCreator
Well-Known Member
Renfro grows hydro, correct?
He has a thread about measuring the mediums ph. In fact, he posted in this thread. He suggested what I said.
You seem to believe you are the only person who knows soil and hydro are different. Could it be possible you are just preaching to the choir?
Did you actually post that you watered with a ph of 12 and 10....?
Has anybody ever posted that? Are you really supervising the rest of us and advising that in soil a ph of 10 or 12 for watering is advisable? Something you would dare post while criticising others?
Im hoping you are really high, or not high at all, hopefully there is some explanation for this.