On the subject of low power skimmers... I'm back to an old DIY air driven skimmer too after having run a Remora C with Mag 3. Don't recall what the Mag 3 uses for power, but the Remora was pretty noisy with that thing feeding the injector. The old air driven job is dead silent being run by a tiny Aquaclear 301 power head and Stellar S-30 air pump for a total of just over 11 watts. Produces nice dry skimmate too, whereas the Remora just made a lot of mildly coloured water which had to be dumped every couple of days. I've got a drain hose on the air driven, but there's never enough fluid accumulation to have to empy anything. Just scrape out the goo and wipe the collection neck every 4 to 5 days. Another plus is that at 11 watts I'm able to run that skimmer on back up power for quite a while.
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