Well, they said they are willing to do it, but the title had to be catchy 
Anyway... PerfectPH is a technical device (not a nutrient or something you add to your nutes) that will keep your pH stable.
Let's say between 5.7 to 6.3 (I did read different numbers, even up to 6.5)

They, Torus Hydro, are advertisers on this forum and they already gave away 3 devices.
I suggested to give another one away to someone who has to do a grow journal.
They replied...
PerfectPH gives away free device
Anyway... PerfectPH is a technical device (not a nutrient or something you add to your nutes) that will keep your pH stable.
Let's say between 5.7 to 6.3 (I did read different numbers, even up to 6.5)

They, Torus Hydro, are advertisers on this forum and they already gave away 3 devices.
I suggested to give another one away to someone who has to do a grow journal.
They replied...
PerfectPH gives away free device
November 03, 2019 at 10:21AM
Read more about this fix