nutrients deficiency expert needed!

nomofatum

Well-Known Member
What should i do? Water again with 6.5 ph water despite the soil still somehow wet? Wouldnt be that over watering and get myself in an another problem?
Consider it flushing, after you get the PH right you won't water until the soil is dry. Water once with 7.0 water, enough to get a runoff sample to test. Test it, and flush with water PH'd to compensate, if lower than 6.0 I would flush with 8.0 water until you get 6.5 or higher on the runoff. Then water once more with 6.5 PH water with some nutes. Discard all runoff, let it dry before watering again as normal.
 

Owais

Member
Don't wait to fix the PH. Fix that now, the longer it goes the more damage. Those don't look very bad so minimal impact if you get it fixed now.
i just checked the ph meter with the calibration solution... it was messed up, about 1.5 higher than it supposed to be so when it give me 6.5 it's actually about 5 or 5. something, the sales man just told i have to calibrate the ph meter every two weeks and my last calibration was about 5-6 weeks ago
 

nomofatum

Well-Known Member
Skip the first part of my last post then, start flushing with PH 8.0 water and checking runoff as you go, once you hit 6.5, run a fair amount of 6.5 water and nutes so they don't starve and you don't overshoot your PH to >6.5.
 

Owais

Member
Consider it flushing, after you get the PH right you won't water until the soil is dry. Water once with 7.0 water, enough to get a runoff sample to test. Test it, and flush with water PH'd to compensate, if lower than 6.0 I would flush with 8.0 water until you get 6.5 or higher on the runoff. Then water once more with 6.5 PH water with some nutes. Discard all runoff, let it dry before watering again as normal.
just check some runoff was still there in 2 saucers, one of them was 6.2 and the other one was 5.8.... hence the effect wasnt so bad on the plants, should i still flush o just keep water them with nutes in 6.5-7.0 ph?
 

nomofatum

Well-Known Member
just check some runoff was still there in 2 saucers, one of them was 6.2 and the other one was 5.8.... hence the effect wasnt so bad on the plants, should i still flush o just keep water them with nutes in 6.5-7.0 ph?
6.2 is fine, 5.8 could use fixing so it recovers and takes less damage. You aren't off too far so I would drop from 8.0 to 7.5 on the flush, but same procedure.
 

Owais

Member
6.2 is fine, 5.8 could use fixing so it recovers and takes less damage. You aren't off too far so I would drop from 8.0 to 7.5 on the flush, but same procedure.
thanks man, i really appreciated u been very helpful, definitely will flush as soon as the soil dries out
 

nomofatum

Well-Known Member
thanks man, i really appreciated u been very helpful, definitely will flush as soon as the soil dries out
Silly to wait until then. If it's showing deficiency that is your first priority, higher chance of root rot due to PH issues than due to over watering too. Fix the problem you have before you worry about another one. If you are really worried about over watering problems add some H2O2 to the water to oxidize the roots and kill bacteria.
 

Owais

Member
Silly to wait until then. If it's showing deficiency that is your first priority, higher chance of root rot due to PH issues than due to over watering too. Fix the problem you have before you worry about another one. If you are really worried about over watering problems add some H2O2 to the water to oxidize the roots and kill bacteria.
oh damn! i will do it now then!
 

DirtyMcCurdy

Well-Known Member
Actually a filter takes out chlorine, but leaves some hard metals, while RO takes everything out... which is why ppl often need to add a micro afyer using RO.


Now for the diagnosis,

1, your ppm is too high. Those yellow tips are nutrient burn. You should either drop your PH or start alternating nutes and fresh water every watering.

2, numofatum is spot on with the magnesium with the more yellow girls.

Unless they are clones, they will each want a tiny bit different nute solution. Best thing to do is find a happy medium that works for all
Regular RO filters DO NOT take out chlorine. They make filters that do... I think.
 

hydroMD

Well-Known Member
Regular RO filters DO NOT take out chlorine. They make filters that do... I think.
Interesting! Thanks for clearing that up.

Was under the impression RO took everything while a small/Tallboy takes out chlorine but leaves hard metals

edit: after doing some research I realized that it is not the reverse-osmosis that takes out chlorine but the carbon filter that most ro filters used for growing come with. Thanks again for clear in that up
 
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nomofatum

Well-Known Member
Interesting! Thanks for clearing that up.

Was under the impression RO took everything while a small/Tallboy takes out chlorine but leaves hard metals
The RO membrane can't remove anything smaller than a water molecule. Chlorine is smaller, but RO systems always have a carbon filter to handle this.

That said, unless you have special circumstances, Fuck RO. Just get an inline carbon filter if you even need/want that. No point taking all the stuff out of the water just to add it back in. (most of what you take out is very usable plant nutrients)
 

Owais

Member
Silly to wait until then. If it's showing deficiency that is your first priority, higher chance of root rot due to PH issues than due to over watering too. Fix the problem you have before you worry about another one. If you are really worried about over watering problems add some H2O2 to the water to oxidize the roots and kill bacteria.
The RO membrane can't remove anything smaller than a water molecule. Chlorine is smaller, but RO systems always have a carbon filter to handle this.

That said, unless you have special circumstances, Fuck RO. Just get an inline carbon filter if you even need/want that. No point taking all the stuff out of the water just to add it back in. (most of what you take out is very usable plant nutrients)
can you check my last thread, one of the 4 autoflowering seems like a hermie can you please confirm it so i discard it now
 

hydroMD

Well-Known Member
The RO membrane can't remove anything smaller than a water molecule. Chlorine is smaller, but RO systems always have a carbon filter to handle this.

That said, unless you have special circumstances, Fuck RO. Just get an inline carbon filter if you even need/want that. No point taking all the stuff out of the water just to add it back in. (most of what you take out is very usable plant nutrients)
Yeah, I use a smallboy to filter my water... chlorine or chloramine dont interact well with my bennies :)
 

DirtyMcCurdy

Well-Known Member
The RO membrane can't remove anything smaller than a water molecule. Chlorine is smaller, but RO systems always have a carbon filter to handle this.

That said, unless you have special circumstances, Fuck RO. Just get an inline carbon filter if you even need/want that. No point taking all the stuff out of the water just to add it back in. (most of what you take out is very usable plant nutrients)
Yes, you take all that stuff out. That way when you know exactly how much you add back in you're left knowing exactly how much, and what, is in there. Its the only way to completely control your nutrient solution. But go ahead, leave your water quality up to your local municipalities.
 

nomofatum

Well-Known Member
Yes, you take all that stuff out. That way when you know exactly how much you add back in you're left knowing exactly how much, and what, is in there. Its the only way to completely control your nutrient solution. But go ahead, leave your water quality up to your local municipalities.
The better, IMHO, option to get you the same complete control, is to test your water. If you test your water you can figure out what good things and what bad things are in it and how much. Then if you have bad things or too much of good things, you pick the most effective option. In most cases this is either no filter at all or a simple inline carbon filter. Then you pick a nute that matches your water or you have JR Peters or similar make a custom mix for your water.

The fact is that most nutes are made for tap/ground/well water, about 200-300 PPM mostly calcium water. Having water with less than that just causes more problems. And fuck waiting forever for a RO system to do it's thing. Far easier options that have no disadvantage.
 

DirtyMcCurdy

Well-Known Member
The better, IMHO, option to get you the same complete control, is to test your water. If you test your water you can figure out what good things and what bad things are in it and how much. Then if you have bad things or too much of good things, you pick the most effective option. In most cases this is either no filter at all or a simple inline carbon filter. Then you pick a nute that matches your water or you have JR Peters or similar make a custom mix for your water.

The fact is that most nutes are made for tap/ground/well water, about 200-300 PPM mostly calcium water. Having water with less than that just causes more problems. And fuck waiting forever for a RO system to do it's thing. Far easier options that have no disadvantage.
My tap water is in the 380ppm range so... yeah, I RO filter mine. And it does take forever but I use a float valve on my RO water line to my trash can reservoir. The filter system I have has an automatic shut off so when flow from either the RO or waste water lines is stopped, it stops both. I just turn the water on before I go to work, bed, or whenever. I come back and I have about 25 gallons of clean RO water and everything is automatically shut off... Its about as easy as it gets.
 

nomofatum

Well-Known Member
My tap water is in the 380ppm range so... yeah, I RO filter mine. And it does take forever but I use a float valve on my RO water line to my trash can reservoir. The filter system I have has an automatic shut off so when flow from either the RO or waste water lines is stopped, it stops both. I just turn the water on before I go to work, bed, or whenever. I come back and I have about 25 gallons of clean RO water and everything is automatically shut off... Its about as easy as it gets.
My well water starts not far from that, ends up about 230 after a simple carbon filter. 230 is pretty nice, I would not want to go less. The goal sure as hell isn't pure water, the goal is nutrient water.

25 gallons would be fine on a normal day, but when I need 140 gallons what do I do? It's going to take a lot of work and 2 days at least to get the job done, I just turn the water on and go have a smoke, come back in time to watch the it finish, just make sure you come back in time, at like 8 gallons per minute it will make a mess quick.
 
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DirtyMcCurdy

Well-Known Member
My well water starts not far from that, ends up about 230 after a simple carbon filter. 230 is pretty nice, I would not want to go less. The goal sure as hell isn't pure water, the goal is nutrient water.

25 gallons would be fine on a normal day, but when I need 140 gallons what do I do? It's going to take a lot of work and 2 days at least to get the job done, I just turn the water on and go have a smoke, come back in time to watch the it finish, just make sure you come back in time, at like 8 gallons per minute it will make a mess quick.
Maybe some day I'll do a side by side. Yeah, I don't quite have those kind of water volume requirements... yet.
 

Owais

Member
My well water starts not far from that, ends up about 230 after a simple carbon filter. 230 is pretty nice, I would not want to go less. The goal sure as hell isn't pure water, the goal is nutrient water.

25 gallons would be fine on a normal day, but when I need 140 gallons what do I do? It's going to take a lot of work and 2 days at least to get the job done, I just turn the water on and go have a smoke, come back in time to watch the it finish, just make sure you come back in time, at like 8 gallons per minute it will make a mess quick.
can you estimate how much these auto's will yield? they are under 1000watts , temp around 26-28C during day and 20C when lights off, feeding them GOLDS LABEL NUTES A+B , Ultra MG AND ULTRA PK , they are 32 days old now all of them are auto flowering except the 2 small ones are regular seeds, the autoflowering are 1 super skunk and the other 2 are white diesel haze, they need another 6weeks maybe till harvest time
the longest one is 47cm and the other 2 around 43-44cm


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