Limits of nano tank design - (help)

[Austinman42]

Is there a general consensus to whats considered the smallest one can go with tank design?
I'll start by saying I have two nano tanks, Waterbox mini 6 and a Seapora 4gallon cube. and have taken inspiration from 12GallonNano 's tank on youtube.

The plan is drilling the mini 6 as the DT and using the 4 gallon as a "sump"
In the hole layout theres two on the back glass and one on the side. With two 3/4" drains at different levels. One to act as a main full siphon drain and the other as a trickle drain to set water level, and a 1/2" return.

Is 5mm glass to thin to drill?
Is 3/4" a large enough drain?
At a 3ft head height is the syncra silent 1.0 enough power?

Any and all comments and help would be greatly appreciated!

 

[Projects with Sam]

I cannot imagine it is easy finding tanks that small that are not completely tempered.

 

[Tenecor Aquariums]

Small tanks can be set up and maintained successfully. This is a picture of our first Model 12 full wet/dryAIO. It is over 40 years old and has been used as a reef, saltwater fish only, planted tank, feeder tank, and refugium. The original lighting was an OSRAM CFL. The powerhead is still original. Today it is a freshwater.

 

[Austinman42]

I cannot imagine it is easy finding tanks that small that are not completely tempered.

While you are correct. I checked with Waterbox and their tanks are all non-tempered and i'm not drilling the seapora cube.