PH drops every 4 days

your pH dropping, which would indicate you have too much nutrient in your solution. Nutrient levels are too high. Click to see full answer. People also ask, what causes pH to drop in hydroponics? This happens because it already has all the nutrients it needs to grow and given the solution is too hot, the plant is being forced to take more water than nutes causing unbalance in the reservoir further resulting in unstable PH levels and worst. Also, what should the pH be in a hydroponic system? With a pH of 7 being neutral, such as with pure water, values below 7 are acidic and those above are alkaline (or basic). For most commonly grown hydroponic crops, an optimal pH range is between 5.5 and 6.5. why does my pH keep going down? When the plant consumes these acidic nutrients, the natural reaction is a rise in pH. This means it is normal for your reservoir to have a natural pH up-swing. pH goes down, EC goes up = Plants are putting nutrient into the water rather than taking them out. Nutrient levels are too high. Why is pH dropping so fast in DWC? If your ph is falling in DWC, it generally means your EC is too low (as above). There is a complication however and that is your air quality. When pumping air into a DWC bucket, you are pumping in Oxygen but also CO2. The addition of CO2 to water in this way is exactly the same process responsible for acid rain.