Connecting two tanks

I have done it with 2 glass tanks.
I just drilled the tanks and fitted a bulkhead or 4 between them.

This is currently something I'm working on with a new invention I'm working on. My dream is to have a 480 gallon and then link it up to some other large acrylic tank possibly even a 2000 gallon plus cinder block tank with a viewing window in the future. I plan on doing this by drilling six to eight inch across holes in the top foot of the two tanks and then hook up PVC pipe fittings. The PVC pipe fittings would

http://www.deviantart.com/art/The-Fish-tank-highway-system-420602781

The PVC pipe fittings would lead into acrylic water toughs that would be supported by specifically built shelves that would go between the two main fish tanks. These thoughts would be built in four, or eight and even 12 foot long sections depending on how far the two tanks are apart from one another. Also the PVC pipe fittings would allow you to take the system apart if you wanted to move the system to a new house.



http://www.deviantart.com/art/Custom-300-gallon-acrylic-fish-tank-419297840



Currently I have bought some acrylic sheets to build a 30 gallon long acrylic aquarium that will be four feet long and a foot deep and a foot wide. It is made out of 1/4 inch thick acrylic. The 30 gallon aquarium will act as a Test fish tank to test my fish tank building skills to see if I should attempt to build a 480 gallon fish tank. Another think the 30 gallon test fish tank will become the first water trough in my fish tank highway system when I buy or build two 300 or 400 gallon fish tanks on each side of it.

this seems to be a hot topic right now. ive seen like 4 threads about this this week