Most hydro growers who have tried Molasses
agree that once was enough
and they wont try that again.
It was for me.
If you are doing an RO only flush
you do not need to adjust the pH
I have left a plant in RO only for 6 weeks
without adjusting the pH
We only adjust the pH
so that metals the plant needs are more easily absorbed.
Metals like Magnesium, Boron,
Calcium, Iron,Manganese etc
are not soluble at higher pH
These are called micro nutrients.
Since we are flushing and not feeding
there is no need to try to adjust the pH.
The plant will drink water
over a wide range of pH,
but not nutrients.
So if you do not keep your pH in the proper range
the plant will become deficient in the micros.
If there are no micros in your RO
why
try to adjust the pH ?
No reason.
Here is a technical view of a pH probe.
Your silver free reference fluid
will leak ions through the ceramic junction
if the fluid you place the probe into
has low ionic content.
If you remember your probe was packed in a very salty fluid
and that is because salt has a lot of free ions.
If you are going to store your probe
you should mix a solution of table salt and RO
and make a storage fluid
that keeps the probe moist.
Try to never let your probe come into contact with RO,
It will shorten the life of your probe.
.