Lol trying to read ec of organic matter...
Ec is a measure of salt ions in a solution that can conduct "electrical conductivity".
Organic matter does not contribute to EC until it's broken down into salt ions (final form).
TDS would be a better judge.
pH and EC reading of any organic nutrient is merely a snapshot of where the hydrogen balance is currently at that specific time in the breakdown process.
Decomposition (breaking shit down) requires 4 things..... oxygen, carbon, moisture and nitrogen.
When your fertilizer is in a bottle it's very restricted as it has very limited oxygen and carbon. Soon as you add your fertilizer to water it starts to react as it gets it oxygen, soon as you add it to medium it gets carbon too. Breakdown continues.
You are literally asking why your pH is so low....... when it's only half way through the breakdown process.
You are applying growing techniques used for synthetic delivery and not understanding the change in mechanism that occurs when you switch synthetic delivery to organic delivery.
Likely due to the natural acidity of the organics, lots of acids, found in products like Big Bud Organic. The standard Big Bud formula (which shares similar ingredients with the organic version) contains citric and ascorbic acids to improve plant respiration and metabolic rates. These ingredients contribute to a low (acidic) pH. The Organic version will be even more so.
That understanding of "what you are adding and why" forms the core of successful organic growing. Rather than relying on rigid formulas thay never deviate, the process centers on nurturing the soil ecosystem, and trusting you have given her adequate buffering capacity to deal with the balance of hydrogen and provide a buffering capacity. To protect from drastic changes.