240 herbie overflow help

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Gambusia
MFK Member
Jul 1, 2010
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I'm planning to plumb my 240 gallon aquarium , from what I see I like the herbie overflow the best , with two standpipes , the question is , if I use a 1 inch overflow for main and a 1.5 for emergency , and I'll this work? I can't really find the flow rate of these online because different sites gives different answers , am planning to get 4-5 times turnover , thanks , ps. Will the 1.5 overflow be able to pick up all the water if the 1 inch clogs ? Thanks
 
I think there's sticky somewhere on here with all the flow rates. If I recall 1" drain is maxed about 1400gph (but please confirm that). You'll also want to consider head, and pipe/plumbing that will reduce the flow as well.

I have 260 gallon tank and use a 1" for my primary drain, 1" for trickle and a third completely dry. The 1.5" stand-by should be fine if the 1" clogs for you (assuming it's a "trickle"). There's some debate about having a dry stand-by vs. a trickle one, but I'd go with the options that you have - especially since the stand-by is larger diameter.
 
I think there's sticky somewhere on here with all the flow rates. If I recall 1" drain is maxed about 1400gph (but please confirm that). You'll also want to consider head, and pipe/plumbing that will reduce the flow as well.

I have 260 gallon tank and use a 1" for my primary drain, 1" for trickle and a third completely dry. The 1.5" stand-by should be fine if the 1" clogs for you (assuming it's a "trickle"). There's some debate about having a dry stand-by vs. a trickle one, but I'd go with the options that you have - especially since the stand-by is larger diameter.

Why dry or trickle be the same ? Won't be having much water going down the emergency anyway
 
I've been researching sumps religiously for last 8 weeks for an upcoming project of mine and the beananimal set up is def the best and safest way to go IMO opinion. Google beananimal sump reef Central and you should be able to find a full write up an diagrams. It's an awesome way of setting up an overflow and very easy too.
 
Beanimal is awesome, question is whether there's enough room in the overflow for 3 pipes required for Beanimal. Lotsa times people won't have that room unless they run coast-to-coast.

Herbie's are dead silent, too. Sometimes they require some adjustment of the gate valve, not sure why. Last year, I had to adjust the valve every night. Now, it doesn't need that anymore--I haven't touched it in months.

Here's a link to PVC drain rates. https://flexpvc.com/WaterFlowBasedOnPipeSize.shtml I think there's a table of flow rates in a sticky here, too.

I think 4X turnover is a little low, I'd shoot for 8-10.
 
Bean animal seems nice but why take a risk of drilling another hole ? Just saying , because if your emergency overflow can take all the water meaning if the main is clog then shouldn't it be safe already ? Sometimes maybe a 1.5 inch single standpipe drain is good enough now but what am saying is just a a bare bottom tank only , like a arowana tank , single arowana nothing else , no sand no gravel no plant no other fish , don't think a 1.5 pipe will clog that easy if only a arowana is kept , but never know a emergency is good enough no ? No need for a third one , just my thought , it all comes down to fish and deco also I guess thanks
 
My set-up is more of Herbie style as I don't use the durso standpipes. I have a third completely dry because I had the room in my overflow (peninsula style tank, btw) and it takes a little less room with just straight pipe. The second drain is to accommodate any fluctuations with the return as the flow may vary slightly in the overflow. I basically took the good in both styles for my situation. Noise isn't an issue and fairly quiet in my living room.

I was throwing out options. The theory is if water flows in a pipe then it could potentially clog. It has happened to someone I know. Having said that your 1.5" can handle as back up if you should need it.
 
Not against it but 10x turnover I thinks is more important for reef. Personally I think it depends on stock, number of fish, feeding, etc. I think ensuring you get even and sufficient flow throughout the tank is key too.
 
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