The information received :

s_1 \frac{dh_1}{dt}=q_1 -\alpha_1 \sqrt{h_1-h_2}

s_2 \frac{dh_2}{dt}=\alpha_1 \sqrt{h_1-h_2}-\alpha_2\sqrt{h_2}

You did provide me information about:
\alpha_1=0.0000208, s1=0.002025m^2, 0.0000163, s2=0.002025m^2

However, you did not provide range for q_1, h_1,h_2 and maximum height for both tank.

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