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View Full Version : Whats the best way to add a overflow to this acrylic tank


Linkfalcon
07/23/2017, 07:59 PM
Whats the best way to add a overflow to this acrylic tank. It has a brace thanks guys for the helphttps://uploads.tapatalk-cdn.com/20170724/27f624a098354b845013ce3f09f4f694.jpghttps://uploads.tapatalk-cdn.com/20170724/79dffdbc7fd1f027b1aa9392195eef9f.jpghttps://uploads.tapatalk-cdn.com/20170724/7b69df927b6680d4eef2e9971d751023.jpghttps://uploads.tapatalk-cdn.com/20170724/39970ab6d8f3b8a4e0cab2508eb432a8.jpg

I wanna run this tank with a herbie
overflow



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SFish
07/23/2017, 08:11 PM
Use one of the holes or drill a hole depending on where you want the overflow to be. The center brace doesn't matter.

Linkfalcon
07/23/2017, 08:42 PM
Could I drill one more hole and run it as a herbie style.
I just want it to be really quiet


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Lsufan
07/23/2017, 09:34 PM
Personally, if that was my tank I would use the existing holes as returns. I would cut a slot in the back of the tank & make a exterior overflow box that is as long as possible. I would stop the slot & the overflow box a couple inches before the existing holes. Then I would drill 3 holes in the overflow box & run a beananimal drain setup. If it was glass I would go a little different route, but being its acrylic it is easier to cut & drill then glass is. The setup I mentioned is by far my favorite setup & is how I would do it.

Btw, if u have to drill anyways then imo a beananimal drain setup is the best setup to have as far as drains. It is dead silent, almost impossible to have a flood & a little more consistent then a herbie. I haven't touched the valve on my syphon drain in years.

SFish
07/24/2017, 03:36 AM
A ghost overflow would be the route I would go. It's really a personal choice as to how you want to set it up.

Lsufan
07/24/2017, 05:15 PM
A ghost overflow would be my second option if u don't want to notch the tank. It would be easier to just install a ghost overflow but by notching the tank u are doing away with the internal wier. So u would have absolutely nothing inside of the tank. I was saying how I would do it, but if I wasn't comfortable cutting acrylic then I would go with the ghost style overflow. Probably the modular marine

Linkfalcon
07/24/2017, 06:07 PM
What size ghost overflow do u think would be best it basically a 70 shallow


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SFish
07/24/2017, 08:53 PM
Depends on how much flow you want. 3x to 5x the DT/hr is the norm. Oversize the overflow a little bit and you will be good to go.

Lsufan
07/25/2017, 08:32 PM
double post:

Lsufan
07/25/2017, 08:38 PM
Get as long of one that will fit. surface skimming is important & something that gets overlooked, but the longer the box the better surface skimming u will have. They all come with a syphon drain setup, so any of them will give u the turnover u need.

Also, get one that has the exterior box the same length as the interior wier. Some of them come with a small exterior box & although u can manipulate the plumbing to fit into the box, it really doesn't work well & makes it inconsistent. I really like the modular marine boxes although I personally don't have one. I made a similar one myself