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02/22/2018, 09:24 AM | #1 |
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Overflow kit questions?
What's up guys. I received my (glass-holes.com) overflow kit in the mail a few days ago. Just browsing through it I realized that I doesn't have any emergency drain in the overflow... thought I was getting the one with the emergency drain, but I must have just clicked and bought, I was admittedly a tad excited and just clicked away.
I'd like to add an emergency drain using the kit I have. I was thinking I would just drill a hole next to the overflow box and plumb a pvc elbow into the inside of the tank turned upward (think I've seen this type of emergency drain in others videos). Questions - can I use a smaller PVC diameter than the main drain? Or should I stick with the 3/4"? Does it matter if I drill the emergency drain hole at the same level as the overflow box if the pvc elbow is higher than the teeth of the overflow? Or should I just automatically plan to drill the emergency drain hole an inch or so higher? Any other tips? Comments I need to know about?
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02/22/2018, 09:43 AM | #2 | |
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02/22/2018, 09:51 AM | #3 |
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So drill the two holes level, but raise the height of the PVC elbow above the overflow about an inch?
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02/22/2018, 10:25 AM | #4 |
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Is there an external component to this overflow, or do you just have an internal box with external pvc?
Are you wanting to run a syphon drain?
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Pat Current Tank Info: 125 in-wall , 40b sump. 6 bulb T5. ASM G2 skimmer. LPS and leathers |
02/22/2018, 11:06 AM | #5 | |
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External sump below the stand. 20g high. Not familiar with a siphon drain? The overflow box is drilled so it should work via gravity? Like I said I'll be using the glass-holes (complete-in-and-out) system. Allows for 700gph.
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02/22/2018, 11:24 AM | #6 |
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I was just wondering about the overflow box.
If you aren't running a syphon drain system (Herbi, Bean, etc) then I don't see the need for an emergency. Emergency drains are for people running a syphon, in case the syphon gets clogged.
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Pat Current Tank Info: 125 in-wall , 40b sump. 6 bulb T5. ASM G2 skimmer. LPS and leathers |
02/22/2018, 11:40 AM | #7 |
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Isn't there still a threat of a gravity drain being plugged?
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02/22/2018, 07:36 PM | #8 |
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Sounds like you may want to do a little more research to figure out what type of overflow you want to go with. The link below goes over the major two used to my knowledge.
https://blog.marinedepot.com/educati...nimal-overflow |
02/23/2018, 11:04 AM | #9 |
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I have the overflow already. I guess I was under the impression that drilled overflows are just as likely to clog as siphon overflows but I guess that isn't the case?
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02/23/2018, 11:30 AM | #10 |
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I was hoping somebody else would chime in on this.
The drain you are running is just a gravity drain with a durso-type standpipe, yes? These drains typically have low flow going through them. Higher flows make them loud. At these low flows, the potential to clog is lower than a syphon drain. And if they do partially clog, it can still usually handle more flow...it will just be loud/er. You should never run a syphon without an emergency. People who run non-syphon drains (durso, stockman, etc) don't usually have emergency drains.
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Pat Current Tank Info: 125 in-wall , 40b sump. 6 bulb T5. ASM G2 skimmer. LPS and leathers |
02/23/2018, 12:53 PM | #11 |
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02/23/2018, 03:23 PM | #12 |
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I wouldn't try to incorporate an emergency drain into that. I would probably put some mesh over the top to keep snails and fish from getting into the box and call it good.
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Pat Current Tank Info: 125 in-wall , 40b sump. 6 bulb T5. ASM G2 skimmer. LPS and leathers |
02/23/2018, 04:51 PM | #13 |
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Sounds good. It actually has mesh that comes with it.
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