Kratky PH problem

Hello, according to the inventor of Kratky method, one should adjust the ph once at the beginning and then forget it. But the problem is that PH keep rising, and I believe we should constantly use the ph down to adjust it right ?
So IT IS SET AND FORGET OR NOT ?
If I need to adjust the PH then is not.
Kratky never mention ph adjustment,
but in general hydroponics we use ph controller to really set and forget it.

So, what do you do in kratky? you adjust it everytime? and with wich substance?
Thank you

never heard of kratky but pH in hydro should be 5.5 to 6.1

rkymtnman said:

never heard of kratky but pH in hydro should be 5.5 to 6.1

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It’s a non-recirculating hydroponic growing method. No air pumps nothing.