So today is a “large” water change day, with a 10-15% water change. I was planning to clean the filter (Eheim 2076) as well, but I have found that there is the same problem with this one that I had with one at work last week: the “floater complete” (part number 7428728) can become dislodged during re-assembly, after cleaning, which allows the middle part of the three which make up “floater complete” to move up into the “adaptor complete” (aka the tap for the hoses, part number 7428718), which means that it is becomes impossible to turn off the tap because the little white tube blocks the part where it closes off. Who comes up with these part names? The symptoms of the problem are inability to close the tap (feels like it is stuck) and if you push it a bit too hard, the tap will easily move from “on” to “off” and back, but without any effect (while making clicky noises in one direction- yes, you have snapped it). The solution is either to take the whole pump to an Eheim repair centre (if it is under warranty, it took them 24 hours to fix, they also did a 6 hour service on it and flashed the firmware, while they were at it) or use a Torx T9 screwdriver to pull apart the filter and fix it yourself (which will probably void any warranty you may have).
If you attempt to fix it yourself, you will get water everywhere, so be careful with the power sockets which your filter is probably plugged into and which are right next to it, on the ground. You will need to lift the inlet and outlet tubes out of the tank, then drain them by undoing the clips, separating the pump assembly from the canister and letting the water drain over the sides onto strategically placed towels. Next step is to pull the pump assembly apart and remove the offending part, reassembly should be quite easy. Photos to follow when I actually go through with this!
Why manufacturing defect? Because this has happened on both of my 2076 filters, within a week of each other. Yes, I am quite careful about reassembling everything properly. Luckily, the filters only need cleaning once every few months, so it’s usually fine to take one’s time over getting it fixed.
It is still an excellent filter, even with this flaw.. but it is an important flaw to be aware of, so one does not break it accidentally.
Oh yes, and lighting is now on from 11:00 until 21:00.