What PH for Promix HP?

ActToBeGood

ActToBeGood

Member
Pro-mix HP is soilless; therefore, we seek 5.8. The Pro-mix HP also has a PH; therefore, do not feed plants 5.8 but offset the PH of the Promix.

I checked my run off and my Pro-mix seems to adjust my nutrients upwards. Therefore, I need a lower PH to attain 5.8. But, when I research the PH of of Pro-mix it says it is about 5.5.

What PH is everyone using for Promix HP?
 
thumper60

thumper60

Well-Known Member
ActToBeGood said:
Pro-mix HP is soilless; therefore, we seek 5.8. The Pro-mix HP also has a PH; therefore, do not feed plants 5.8 but offset the PH of the Promix.

I checked my run off and my Pro-mix seems to adjust my nutrients upwards. Therefore, I need a lower PH to attain 5.8. But, when I research the PH of of Pro-mix it says it is about 5.5.

What PH is everyone using for Promix HP?
Click to expand...
anything 5.8-6.3 works for me with good runoff. Also most bales are not same some seem to get more limestone than others when packing. I haven't checked ph in a long time i use well an rain water here.
 
chuckeye

chuckeye

Well-Known Member
ActToBeGood said:
Pro-mix HP is soilless; therefore, we seek 5.8. The Pro-mix HP also has a PH; therefore, do not feed plants 5.8 but offset the PH of the Promix.

I checked my run off and my Pro-mix seems to adjust my nutrients upwards. Therefore, I need a lower PH to attain 5.8. But, when I research the PH of of Pro-mix it says it is about 5.5.

What PH is everyone using for Promix HP?
Click to expand...
I use well water, ~500 ppm, ~7.5 ph, NO ph down ;)

But I feed with Mega Crop one part which is chelated and have never had ph problems !

Day 4 The Girls 31 Oct.jpg

Cheers
 
Billy the Mountain

Billy the Mountain

Well-Known Member
ActToBeGood said:
Pro-mix HP is soilless; therefore, we seek 5.8. The Pro-mix HP also has a PH; therefore, do not feed plants 5.8 but offset the PH of the Promix.

I checked my run off and my Pro-mix seems to adjust my nutrients upwards. Therefore, I need a lower PH to attain 5.8. But, when I research the PH of of Pro-mix it says it is about 5.5.

What PH is everyone using for Promix HP?
Click to expand...
Peat is quite acidic on it's own. Dolomite lime is added to adjust the pH of the medium. It's almost certain that the pH of an individual bag will vary. Also, over time, as the lime is used up, the medium tends to become more acidic.

pH of 6 is a good target as you have a bit of wiggle-room
 
chuckeye

chuckeye

Well-Known Member
Billy the Mountain said:
Peat is quite acidic on it's own. Dolomite lime is added to adjust the pH of the medium. It's almost certain that the pH of an individual bag will vary. Also, over time, as the lime is used up, the medium tends to become more acidic.

pH of 6 is a good target as you have a bit of wiggle-room
Click to expand...
Even with a six month long sativa grow I have not seen a ph issue....

Perhaps it depends on what you are feeding. Mega Crop one part is chelated, GH Maxi series is ph balanced, no need to adjust the ph of water in.

But if you want to adjust ph, go for it :mrgreen:

I'd rather not mess with acid....

Cheers
 
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