is there a PH calculator

deviney

Well-Known Member

• Oct 21, 2013

• #1

am looking for a way to calculate how much ph up or down to add to my water. I have a 30l hydro system and i just keep having to guess how much to pop in and itsnot going so good i keep having to add up and down a few times until its balanced

I start with 8 ph tap water and after adding nuets it goes down to 4 and then i add ph up and itl shoot up off 2 ml's and so on and so on and its taking for ever to get to 5.2.... so is there a easy way or a calculator or something?

 

1itsme

Well-Known Member

• Oct 21, 2013

• #2

add just a little at a time and write down how much you add. after you do it once you will know how much to add.

 

lime73

Weed Modifier

• Oct 21, 2013

• #3

try using less than 2ml at a time...dont need much ph up/down to adjust ph.
after you do it a few times ...you should be able to get it bang on,and you'll know how much to add but basically its trial and error first few times.
if you still can't get it close by trail and err, or you just dont like doing it that way, you could get a digital ph meter, which shows you what the ph levels are at while your adding ph up or down.

 

Red1966

Well-Known Member

• Oct 21, 2013

• #4

Remember to stir it well before each check. I crank my airstones up full blast.

 

lime73

Weed Modifier

• Oct 21, 2013

• #5

http://www.amazon.com/BestDealUSA-PH-009-Meter-Digital-Tester/dp/B0087LOWIA/ref=pd_sim_hi_5

 

G

Glaucoma

Well-Known Member

• Oct 21, 2013

• #6

You could calculate it if you knew the specifics of the acid you are using. In the case of GH's ph down, it's phosphoric acid, but I don't see any info on the concentration, which is important. You can get all Hiesenburg with the chemistry if you have all the info, or just do as posted above. Add a ml and wait a bit (I wait 10-15 mins for it to react), and record your findings. Eventually you find your window.

Just keep in mind that every full ph point represents a factor of 10, so a ph of 5.0 is 10 times more acidic than 6.0 and a ph of 4.0 is 10 times more acidic than 5.0. This mean a ph of 4.0 is 100 times more acidic than 6.0, so be careful!

 

M

max420thc

Well-Known Member

• Oct 21, 2013

• #7

Do not run at a PH of 5.2 try running at 6.a range between 5.8 and 6.2 is good.

 

lime73

Weed Modifier

• Oct 21, 2013

• #8

max420thc said:

Do not run at a PH of 5.2 try running at 6.a range between 5.8 and 6.2 is good.

Click to expand...

good point !
View attachment 2866671

 

G

Glaucoma

Well-Known Member

• Oct 21, 2013

• #9

Also, since you are using tap water, you may have trouble adjusting and holding it where you want it. The harder the water, the harder it is to control because the minerals in it act as a buffer. You may find it much easier to work with RO water as a base if your ph doesn't want to stay where you set it.