09-20-2007, 02:19 PM
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The output from the fluidized sand bed filter is directed at an angle over the surface of the water producing a lot of surface movement. The other day some forum said that fluidised sand bed filters can remove nitrates even in oxygenated water is this correct?
Given that the nitrates and nitrites are now constantly nearly 0, something must be working.
Pump and relay/timer has been working for almost 5 months now, how long do you reckon before they breakdown? How long does a normal pump last?
Also, the cool thing about this system is that it only requires a external filter (which i had spare) and a relay/timer which i also had spare.