How much PH down to use

Hi guys,

Not sure if the PH meter that I have is accurate or not.

My water before adjustment is about 7.6

Could anyone tell me if there is a formula to work out how much PH down to add to a 5 liter bottle to get the PH down to 6.0

I'm adding about 3 ml to get to this result but someone from a similar area only adds 0.75ml per 5L although they do not measure the Ph at all.

nope. add whatever it takes to get to the pH you want. after awhile, you'll see it will be roughly the same amount but it can always vary.

how does your friend know what the pH is if not measured?

buy the pH callibration solutions. measure with your meter and see if accurate or not.

Like mentioned above how does your friend know unless he's measured at least a few times and is confident in the water sorce being the same every time .........just add it slowly until you get it where you want it .......just curious what are you growing in

Indacouch said:

Like mentioned above how does your friend know unless he's measured at least a few times and is confident in the water sorce being the same every time .........just add it slowly until you get it where you want it .......just curious what are you growing in

Click to expand...

Growing in a mixture of peat moss and coco coir and perlite.

Justforfun1 said:

Growing in a mixture of peat moss and coco coir and perlite.

Click to expand...

Oh ok .......just add little by little to your container of water and keep track of what it takes it should stay close everytime using the same source for water ......

Dilute 1ml of PH down with water in a separate cup/jug, then keep adding it in 2-4-8ml amounts to your feed water, stir your water and watch ph. voila

P.S. This is for 2 litre jug

Peat moss has a very low ph in the 5.5 range so you may not even need pH down.