My old air pump finally gave up. Have been using it since the start in Siam Lake View so must be 4-5 years old. The rubber in the pumping mechanism has perished. At 130 Baht for the pump its done well. But today as a replacement I bough a better one. Has 4 outlets and can do up to 30 litres per minute. So two outlets into top tank and two below. Doubt it does 30 litres per minute under the pressure of being in the bottom of my tank but it does give far better air then previously. WIll monitor progress.
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