Looking for the experts on custom tanks

[Lost1130]

Ok so I have a 150 with 3 sumps about 500g total water in the system so I will be taking this down to modify the tank and build my new stand and do some custom work on the tank making my own coast to coast and enlarging my dt from 72x28x18 to 72x28x28 what are the pros and cons of an external glass made coast to coast vs internal coast to coast will be making everything from cutting the glass to doing the build itself so I need help to bounce ideas off of please help me have to have this finished soon before wife kiss me for having this all over my house project is taking over the house lol

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[mcgyvr]

Internal takes up display tank room.. external does not..

Then there is surface skimming.. The "wider" the area were water is being pulled from the better the potential for more consistent surface skimming..
However with sufficient tank surface flow thats usually not an issue.. But more surface flow = greater evaporation rate = cooler tank temps..

 

[der_wille_zur_macht]

Internal takes up display tank room.. external does not..

The inverse is true as well. External takes up room behind the tank. If you want the tank close to a wall, that may be a bad thing.

It's hard to give any advice because it really depends on the specifics of the overall build. Sized and built similarly there won't be any significant differences in terms of actual performance.

 

[ca1ore]

I have had both, and I much prefer the current 'fad' of a low profile skim box in the tank and a larger external scupper box on the back. I have enough room in the room, and really HATE equipment inside the tank. Most internal glass C2C overflows (including the ones I have made) are an eyesore IMO. My impending build is a 36" deep tank that expands to almost 42" with the external box. Not an inconsiderable intrusion into the room :lol: and perhaps objectionable to some.

 

[Lost1130]

Ok so if I'm doing it out the back I'm cutting the back glass so that it flows over the back glass so there is nothing in the tank the other part I am considering doing a closed loop hybrid return

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[mcgyvr]

Ok so if I'm doing it out the back I'm cutting the back glass so that it flows over the back glass so there is nothing in the tank

That is one way to do it.. make the "weir" the back wall of the tank..
Another is to use a low profile box like the synergy/ghost overflow (like ca1ore speaks of) has and drill bulkhead holes in the back..

Cutting/notching the back out is the least intrusive way as there is no box of any size inside the display tank..

 

[ca1ore]

Just out of curiosity, how would one go about cutting an overflow into the back panel. I always assumed the custom shops used or had access to one of those water jet CNC type machines.

 

[Lost1130]

My family is big in the glass business so I have access to that type of equipment

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[ca1ore]

Outstanding. I'm coming over ......

 

[Lost1130]

Sounds good

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