All about PH

videoman · 08-09-2007, 10:18 PM

PH is complicated, there are various aspects to it, the water, your nutes all effect the ph. Do you know if your nutes raise or lower your ph?

Do you use actually domolite lime? This is good to use.

What is your ph out of the faucet, vs after you add your nutes?

If all this sounds confusing......GOOD!
Let's simplify it for you:

Before we do, let me assure you that if your PH is too far one way or the other, you will lock out certain nutes, here is a chart explaining that, it includes both hydro and soil:
phnutrcombo3.jpg

You can see here that the acceptable range is very small, 6.6 to 6.8 in soil.

Rather than PHing your water, than again after you add your nutes, and.....you still don't know how your soil will effect the PH, so the proper way is to take a sample of your runoff after you've fed your babies. This way you are getting a true measurement of everything involved.

You can see in the chart how being off just a little bit will lock out specific nutes, and I'll bet you, PH being out of whack is the cause of most deficiency's during a grow.

GeckoPunk · 08-13-2007, 05:20 PM

Quote:

Originally Posted by videoman

PH is complicated, there are various aspects to it, the water, your nutes all effect the ph. Do you know if your nutes raise or lower your ph?

Do you use actually domolite lime? This is good to use.

What is your ph out of the faucet, vs after you add your nutes?

If all this sounds confusing......GOOD!
Let's simplify it for you:

Before we do, let me assure you that if your PH is too far one way or the other, you will lock out certain nutes, here is a chart explaining that, it includes both hydro and soil:
Attachment 639

You can see here that the acceptable range is very small, 6.6 to 6.8 in soil.

Rather than PHing your water, than again after you add your nutes, and.....you still don't know how your soil will effect the PH, so the proper way is to take a sample of your runoff after you've fed your babies. This way you are getting a true measurement of everything involved.

You can see in the chart how being off just a little bit will lock out specific nutes, and I'll bet you, PH being out of whack is the cause of most deficiency's during a grow.

Great advice bro...
I remember that chart from CC, it's pretty helpful.

I never use it anymore though, mainly cause I keep my plants at a strict 6.5 where practically all the nutes needed can be absorbed via the roots...

green_nobody · 01-18-2008, 03:18 PM

man, you don't belief what trouble i went thru to find that one today - search function didn't turned it up nor did search by your threads for some reason.

glad that my brain kicked in again at some point

midgradeindasouth · 01-18-2008, 09:50 PM

What is up with egg shells or sea shells.

I suppose calcium.

What does calcium do to ph?

ganjababy · 02-08-2008, 10:09 AM

My pH is too high (7.5ish) I think it was beacause I put a bit much lime in the soil. I've been trying to bring it down with water at 6.5 but to no avail. My plants are only a week old and they show no signs of being sick. Should I dump the soil and remix or should I try to bring the pH down. Are there any suggestions?

Baywatch242000 · 10-11-2008, 04:45 PM

Quote:

Originally Posted by ganjababy

My pH is too high (7.5ish) I think it was beacause I put a bit much lime in the soil. I've been trying to bring it down with water at 6.5 but to no avail. My plants are only a week old and they show no signs of being sick. Should I dump the soil and remix or should I try to bring the pH down. Are there any suggestions?

Is LIME the only thing that will bring the PH down? Is it bad for plants?

I have 8.0 PH tap water and need to bring it down as well. I don't know what to do. Can anyone help?

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

All about PH

Newcomers Questions Welcome Here