How much nutes to give autos

A

Ayokiwi717

Well-Known Member
So I have currently been giving a quarter dose of nutes. Notice my one plant is showing phosphorus issues. I already flushed last week. Ran 8 gallons through a 2.5 gallon pot. She just started showing this issue. With a quarter dose, ph of water was decently high around 7.2, with a half dose of nutes, it brought it down to 6.5. The run off is now testing at 6.5 after I water it today with the half dose of nutes. My plants are 7 weeks into flower. Think it may be they just needed that boost to half dose, what you guys think?
 
xtsho

xtsho

Well-Known Member
Ayokiwi717 said:
So I have currently been giving a quarter dose of nutes. Notice my one plant is showing phosphorus issues. I already flushed last week. Ran 8 gallons through a 2.5 gallon pot. She just started showing this issue. With a quarter dose, ph of water was decently high around 7.2, with a half dose of nutes, it brought it down to 6.5. The run off is now testing at 6.5 after I water it today with the half dose of nutes. My plants are 7 weeks into flower. Think it may be they just needed that boost to half dose, what you guys think?
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Why are you flushing when you've only been feeding 1/4 strength nutrients? Runoff pH is pretty much worthless for getting an accurate reading. I know people do it and they think they're getting an accurate pH measurement. They're not. Running a bunch of water through to get the runoff to match what you think the pH of the soil should be is a bad practice.


This from Fox Farms. Someone else posted the link a couple days ago. I can't remember who but I found it worth saving.

Helpful Hint: testing for pH in soil is very different than when you test in water. Testing the runoff from a container is not always accurate as the water just drains out nutrients. If you want to use your current pH instrument instead of one calibrated for soil, you must test your pH with a slurry test. Take ½ cup of soil and mix with 1 cup of water. Let it sit for 30 minutes and test away. We recommend that everyone test their pH as it is a top cause for many plant problems, but spend the extra money on a better meter and keep the tip clean.

foxfarm.typepad.com

Potting Soil 101

Here at FoxFarm we get a lot of questions about our potting soils. Now that it's spring and everyone is transplanting their seedlings and filling up their containers, it's a good time to think about choosing the right potting soil...
foxfarm.typepad.com
 
A

Ayokiwi717

Well-Known Member
xtsho said:
Why are you flushing when you've only been feeding 1/4 strength nutrients? Runoff pH is pretty much worthless for getting an accurate reading. I know people do it and they think they're getting an accurate pH measurement. They're not. Running a bunch of water through to get the runoff to match what you think the pH of the soil should be is a bad practice.


This from Fox Farms. Someone else posted the link a couple days ago. I can't remember who but I found it worth saving.

Helpful Hint: testing for pH in soil is very different than when you test in water. Testing the runoff from a container is not always accurate as the water just drains out nutrients. If you want to use your current pH instrument instead of one calibrated for soil, you must test your pH with a slurry test. Take ½ cup of soil and mix with 1 cup of water. Let it sit for 30 minutes and test away. We recommend that everyone test their pH as it is a top cause for many plant problems, but spend the extra money on a better meter and keep the tip clean.

foxfarm.typepad.com

Potting Soil 101

Here at FoxFarm we get a lot of questions about our potting soils. Now that it's spring and everyone is transplanting their seedlings and filling up their containers, it's a good time to think about choosing the right potting soil...
foxfarm.typepad.com
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I will have to try this. Do you think it could be a possibility with being flushed and only being fed once within a weeks time. She has been give plain water I think three or two times including the flush. Im really hoping its just she has low nutrients now. I flushed because they had nutrient lockout. I just cant imagine that is the issue im currently dealing with. I got to test the soil, again, because I didn't do it right, but idk. Its either not enough nutes especially after flush, or there is soil ph problems. I though fox farm happy frog is ph balanced? Just need them to survive another 13 more days at the very least. At that point, I made it to breeders recommended time.
 
calvin.m16

calvin.m16

Well-Known Member
I think you should feed standard strength and see what happens, watch for tip burn on the top of the plant and if you see it then dial it back a bit until it stops progressing. I call them "Frosted Tips" on the ends of the leaves. Little brownish/white tips. I'm not sure when or why you'd require only 1/4 dose nutrients? Generally speaking Ruderalis (AutoFlower) plants tend to handle heavy feeding in my experience. I grew some autos a couple years ago and they got monstrous feeding daily with Advanced Nutrients PH Perfect.1605671584802.png
 
A

Ayokiwi717

Well-Known Member
calvin.m16 said:
I think you should feed standard strength and see what happens, watch for tip burn on the top of the plant and if you see it then dial it back a bit until it stops progressing. I call them "Frosted Tips" on the ends of the leaves. Little brownish/white tips. I'm not sure when or why you'd require only 1/4 dose nutrients? Generally speaking Ruderalis (AutoFlower) plants tend to handle heavy feeding in my experience. I grew some autos a couple years ago and they got monstrous feeding daily with Advanced Nutrients PH Perfect.View attachment 4745376
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This would be the first recommendation to give full nutes... pretty much everywhere says to start at a quarter to half nutes. I bumped up to half now and pray that was the issue. I took a shot glass and filled it halfway with dirt and put water into it then. After letting it sit for mabe 2 hours, it was reading at 6.9-7.0 is, so I dont think its the soil. Idk, I just hope I found a solution
 
calvin.m16

calvin.m16

Well-Known Member
Ayokiwi717 said:
This would be the first recommendation to give full nutes... pretty much everywhere says to start at a quarter to half nutes. I bumped up to half now and pray that was the issue. I took a shot glass and filled it halfway with dirt and put water into it then. After letting it sit for mabe 2 hours, it was reading at 6.9-7.0 is, so I dont think its the soil. Idk, I just hope I found a solution
Click to expand...
I have never ran 1/4 nutrients and I've grown over 20 strains with probably 5 different complete and base nutrient lines. 1/4 would make me expect a deficiency with any product line or stunted growth.
 
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