Hi folks,
I'm running an Eheim 2178 on a Juwel Vision 260 tank.
It has a 12-hour bio function which enables you to set two different flow rates, alternating every 12 hours.
I've set it up to to run at maximum flow during the day (to distribute nutrients and CO2) and minimum flow at night (to give the fish a rest and maximise the effectiveness of my UV sterilizer).
What are people's thoughts on whether this risks impairing its effectiveness as a biological filter, or de-oxygenating the tank at night when the plants are using up oxygen?
Pump ratings (according to the three baffling multilingual manuals which came with the filter) are:
Max pump output 1850lph
Max filter output (with media) 1100lph
Min filter output ("Min. filter capacity", whatever that is supposed to mean) 400lph
UV sterilizer max throughput for full effectiveness: 600lph
I'm running an Eheim 2178 on a Juwel Vision 260 tank.
It has a 12-hour bio function which enables you to set two different flow rates, alternating every 12 hours.
I've set it up to to run at maximum flow during the day (to distribute nutrients and CO2) and minimum flow at night (to give the fish a rest and maximise the effectiveness of my UV sterilizer).
What are people's thoughts on whether this risks impairing its effectiveness as a biological filter, or de-oxygenating the tank at night when the plants are using up oxygen?
Pump ratings (according to the three baffling multilingual manuals which came with the filter) are:
Max pump output 1850lph
Max filter output (with media) 1100lph
Min filter output ("Min. filter capacity", whatever that is supposed to mean) 400lph
UV sterilizer max throughput for full effectiveness: 600lph