I2C + temp. readings


I am working with a water control system that measures, flow, temperatures, time:

Arduino UNO R3

2 x flowmeters (pin 2, pin 3) 4 x LM35 (A0, A1, A2, A3) 1 x RTC module (i2C) (A4, A5)

The problem lies in setting analog reference (internal) + I2C connection. I hooked up the wires to see what goes on and the figure above shows that. So, is it impossible my attempts or am I doing it wrong?

maybe if I bring the device output (RTC) down to 1.1V should work, as the line (SDA, SCL) is now powered 1.1V ( analog reference internal)