This is my first dutch bucket run and my reservoir...

I use general hydroponics maxi nutrients and they are the most stable nutrients you can get. I never have to adjust them after the initial adjustment at water change. I have tried several brand base nutes and boosters. Most of them will fluctuate every couple days.

Just ask @BigDaddyK, he’s an Hydro Grower, he will probably know why you’re having pH fluctuations and might have some few good tips to give you to keep it stable.

hey there G , yeah pretty normal because why ? as you know your nutrient is alive and not sterile plus your plant and its root system are also alive so there's a fair amount of "breathing" happening and this is what causes the fluctuations. What you're trying to do is manage that process best you can and there are a few ways to do it. The solution for your is to actually add more chelation agent to your mix, at this stage you should be using a chelation agent like hydroguard, h202, or something like that for hydro , adding this should help solve your problem somewhat. Hope this helps ! rocket: