Why is my PH and PPM raising slowly everyday?

I have a Waterfarm Hydro set up and ive recently had some nute burn so im flushing the system with clean water.
Originally my res was at 6.0PH and around 80PPM. But i went and checked today and it is 7.0PH and almost 200PPM. why are they both rising when im just trying to flush my plant from the nute burn??

and will adding fresh water dilute the water and make the PPM go down?
and will adding "PH DOWN" bump up the PPM?

why is this happening? thanks!!!


G-RAAB

This is most likely completely normal. Plant rhizosphere exudes sugars and carbohydrates that will slowly but consistently raise the nutrient pH a little. I always stick to dilution with fresh water, never adding pH up. Usually I have already added pH down, so best to not mix the two together. Precipitates and pH/ppm swinging through the solution can occur. And when you flush, you flush with water until nothing comes out. 0ppm/EC Also, plants will typically take in more water than they will nutrients. This is why you must top off daily, or at least to the same level each time you go to feed. As the plant takes in water and nutrients, it takes in more water than nutrients leaving you with a more concentrated mix each feeding. Dilute with water each day and your pH and ppm swings will be less.

also some nutes will swing ph more than others ....fox farms line and GH 3 part come to mind....

i thought that ive been flushing for long enough now, i was going to start up a super weak nutrient solution tomorrow because i thought it might be ready.
should i hold off on the nutes for even longer and wait till the twisting stops? or should i start up a super weak solution?

Oh shit yea until it drops to around what you put in. 0 will never be achievable for you if you use 80ppm already. Pull back on the nutes. 1/8th-1/4 and build them up slowly. You'll do great if you just work her slow.

okay thanks so much!

How big are the plants? I noticed that my PH rises daily until the plants get a certain size then everything stabilizes when they get big enough to really eat

ganjaman87 said:

How big are the plants? I noticed that my PH rises daily until the plants get a certain size then everything stabilizes when they get big enough to really eat

Click to expand...

Only about 10 inches, the roots are just barely coming out of the bottom of the bucket and dropping into the water. BARELY though, like im talking, a couple strands of skinny white roots.
Hopefully they take off soon...