BM NAC 3.5 Overflowing Badly

[PaulPaul01]

 

I bought a second hand skimmer from a nice member in SRC, and I haven't used it much since, other than to check if it works. It always overflowed when I used it, but I figured I'd resolve it once I finally turn it on for my new tank. It still overflows very badly, this was the first minute or two it was on in my sump. Pls do watch the video, and pls advice as to how to make it skim properly. Thanks a lot:)

 

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[PaulPaul01]

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I bought a second hand skimmer from a nice member in SRC, and I haven't used it much since, other than to check if it works. It always overflowed when I used it, but I figured I'd resolve it once I finally turn it on for my new tank. It still overflows very badly, this was the first minute or two it was on in my sump. Pls do watch the video, and pls advice as to how to make it skim properly. Thanks a lot:)
 
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BTW, the cup cap is off to show the overflowing.

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[Solo77]

See the white tube with numbering, slowly turn to avoid overflowing. 

[soggycookies]

There should be a cap above the thick white tube like@Solo77 mentioned. It’s the valve adjuster to alter the water level in the skimmer. Incorrect water height is probably what is causing your skimmer to overflow all the time, IME using BM skimmers having it on a low setting(between 0 & 1) is what will set the water height in the skimmer lower. Also you might want to tweak the air intake but from your video it looks as though some parts of the skimmer are missing(air intake adjustment cap)


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[PaulPaul01]

There should be a cap above the thick white tube like[mention=14019]Solo77[/mention] mentioned. It’s the valve adjuster to alter the water level in the skimmer. Incorrect water height is probably what is causing your skimmer to overflow all the time, IME using BM skimmers having it on a low setting(between 0 & 1) is what will set the water height in the skimmer lower. Also you might want to tweak the air intake but from your video it looks as though some parts of the skimmer are missing(air intake adjustment cap)


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Yeah there are some missing parts, but at the time I couldn't really tell. I turned the adjustment pipe and it worked out very well, had some really good skimmed material in the collection cup after some hours. Regarding the missing parts, would the skimmer still function properly in the long term? Thank you:)

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[PaulPaul01]

See the white tube with numbering, slowly turn to avoid overflowing. 

Yes it worked, thanks:)

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[soggycookies]

Yeah there are some missing parts, but at the time I couldn't really tell. I turned the adjustment pipe and it worked out very well, had some really good skimmed material in the collection cup after some hours. Regarding the missing parts, would the skimmer still function properly in the long term? Thank you:)

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What are you missing? Either way it should be fine as long as it isn’t overflowing and since you’re getting skimmate in the collection cup all should be fine. If you’re afraid it might overflow again just monitor the water level in the skimmer neck/column and adjust the white tube accordingly


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[PaulPaul01]

40 minutes ago, soggycookies said:

What are you missing? Either way it should be fine as long as it isn’t overflowing and since you’re getting skimmate in the collection cup all should be fine. If you’re afraid it might overflow again just monitor the water level in the skimmer neck/column and adjust the white tube accordingly


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Thanks, will do that:)