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Old 05-26-2019, 12:15 AM
tunachunks tunachunks is offline
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I had to make the same decision a while back. And I ended up using all the space in the sump for cheato, I am also using a HOB skimmer that has a much smaller footprint. It hangs off my sump, and runs 12h per day.
Not sure if the Skimmer is needed, I had the system running without it for 3 weeks with no ill effects. But it gives me piece of mind.

If you had a big nutrient spike, like when something dies in your tank the skimmer would take care of it. That is my argument for still running it.
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Old 05-26-2019, 02:17 PM
BCOrchidGuy BCOrchidGuy is offline
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@Tunachunks, that's a really good point. I know it's been discussed before but I couldn't find anything, hence the post.
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Old 05-27-2019, 07:23 PM
tunachunks tunachunks is offline
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Thanks BCOrchidGuy, what I would be interested in is the ability to add oxygen to the water - Chaeto vs Skimmer.
Reason number two for me to run the Skimmer is its ability to oxygenate the water.

I just don't know if Chaeto alone is sufficient to add enough oxygen to the water. Would be great to hear if anyone has some more insight...

Thanks and Happy Reefing
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Old 05-27-2019, 08:13 PM
hillegom hillegom is offline
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If you want to add O2,You would have to have the lights on above the chaeto 24/7
Also, what happens if the power goes out? The skimmer stops of course, but the cheato would consume O2 without the lights. This happens to everyone, of course, so an airstone on a battery solves that.
I would have both
HOB skimmer and chaeto in the sump
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