How to Raise PH

gezzy da snowman

gezzy da snowman

Well-Known Member
Hey i have 4 autoflowering lemon skunks and chemdogs all about 5.2 in soil. What should i start doing to raise the ph as it should probably be about 6.5 for soil. The leaves are starting to have brown spots after about 3 weeks
 
simpsonsampson420

simpsonsampson420

Well-Known Member
yea.. vinegar is acidic.. it lowers ph... baking soda does the raising....

how much it takes will vary....

you can also buy some PH UP and use it... a little goes a long way so use a little at a time and raise it slowly so you dont over shoot.. its cheap and can be bought at any hydro store..
 
spiked1

spiked1

Well-Known Member
Check the PH before and after adding nutes.
If I add humic or fulvic acid at 4ml per litre the PH goes from 7.1 to 5.9.
That's why I check both times, some nutes contain these.:peace:
 
nraged

nraged

Well-Known Member
spiked1 said:
Check the PH before and after adding nutes.
If I add humic or fulvic acid at 4ml per litre the PH goes from 7.1 to 5.9.
That's why I check both times, some nutes contain these.:peace:
Click to expand...
I been using natural up by earth juice and it seems to be working fine. If you do go the baking soda route watch for salt buildup. Make sure you flush cause it does have salt in it
 
doc111

doc111

Well-Known Member
gezzy da snowman said:
Hey i have 4 autoflowering lemon skunks and chemdogs all about 5.2 in soil. What should i start doing to raise the ph as it should probably be about 6.5 for soil. The leaves are starting to have brown spots after about 3 weeks
Click to expand...
Try adding fine dolomite lime to your soil. It helps buffer it against abrupt pH changes.
 
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