HELP! PH 7.1

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Cheesylato

Member
Hi! So my Blueberry headband plant is in a 5 gallon bucket and is giving me a Ph of 7.1 right now. I know my Ph should be around 5.5 or 5.6 which is what it was reading when I changed out my bucket on Sunday to do a feeding. But I think when I did my last feeding I didn’t allow the water to sit long enough before ph testing it when I added the nutrients. Now she is showing some faintbrown and yellow spots starting to appear on her leaves. What should I do? I don’t usually do my feedings until Sunday’s but I’m scared I will hurt her if I let her stay with this for 3 days. Please help! Forgot to mention this is my first grow so I’m just learning.
 

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fragileassassin

fragileassassin

Well-Known Member
Add Ph down.
Change water.
You should be phing after nutes. Changing the ph of the water before adding nutrients is doing pretty much nothing to help you.
 
Airwalker16

Airwalker16

Well-Known Member
And expect this to continue to happen. These single 5gal bucket setups just don't hold enough water volume to keep a steady pH.
 
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Splicer102

Member
I have a similar setup as you and had similar issues with PH. I would change the water, add nutes, ph it to 5.8, then when I checked it the next day it would rise to 7.0+. I'm no expert but I'm fairly certain that the airstones were causing the PH to rise. Only thing I could do to steady the PH was to place the airstones in the water for about 20 minute before I added nutes, the PH for whatever reason would increase, then I'd add ph down, and I'd throw the airstones back in for another 10 minutes or so before I checked PH.

Everything that I've read has said that airstones shouldn't cause ph to rise, but I'm quite certain that's what my issue was. My ph has been pretty steady since I started doing it the way I stated above.
 
icetech

icetech

Well-Known Member
Splicer102 said:
Why is that? I've always been told ~5.8 is best for hydro..
Click to expand...
I used to ph to 5.6-5.8.. i was chasing issues that didn't make sense then looked at a ph chart and mag and cal uptake both drop off massively under 6.0ish.. Now this of course is different for every strain.. BUT there is no downside of going to 6.2 instead of 5.6.. so why not?
hydroponics-ph-chart-marijuana.jpg
 
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Cheesylato

Member
fragileassassin said:
Add Ph down.
Change water.
You should be phing after nutes. Changing the ph of the water before adding nutrients is doing pretty much nothing to help you.
Click to expand...
I’m sorry I must have wrote it weird. I added the nutes to the water and then ph’d it. I was tryi
Splicer102 said:
I have a similar setup as you and had similar issues with PH. I would change the water, add nutes, ph it to 5.8, then when I checked it the next day it would rise to 7.0+. I'm no expert but I'm fairly certain that the airstones were causing the PH to rise. Only thing I could do to steady the PH was to place the airstones in the water for about 20 minute before I added nutes, the PH for whatever reason would increase, then I'd add ph down, and I'd throw the airstones back in for another 10 minutes or so before I checked PH.

Everything that I've read has said that airstones shouldn't cause ph to rise, but I'm quite certain that's what my issue was. My ph has been pretty steady since I started doing it the way I stated above.
Click to expand...
Thanks! I’m gonna try that
 
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Splicer102

Member
icetech said:
I used to ph to 5.6-5.8.. i was chasing issues that didn't make sense then looked at a ph chart and mag and cal uptake both drop off massively under 6.0ish.. Now this of course is different for every strain.. BUT there is no downside of going to 6.2 instead of 5.6.. so why not?
View attachment 4573448
Click to expand...
I see what you're saying. I'm going to have to try that on my next grow. Thanks for the tip..
 
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