I have a 30g breeder thats veen running non stop since 1995 when i was a little kid and my parents got it. Im 34 now and i resealed the inner seals about a year ago. So thats 25 years there.
My 27g hexagon i got when i was 14 which was 20 years ago as been running non stop. Resealed it 2 years ago.
I also have a 92g corner bowfront that is like 17 years old. It needs resealed soon but still running.
All 3 are perfecto tanks.
My oldest and largest is my 135g reef. I got it 4 years ago from the original owner who was in his mid 60s. He bought it in 1984. It was built in 1982. It came with a custom built steel angle iron stand. The stand is 3/16th thick. Thicker than a pickup truck frame. Lol.
Althought i put that in storage and i got a wooden perfecto stand that was like 15 years old and barely used.
I resealed the tank when i got it. And its been running since. It has 1/2 inch thick glass and no center braces. Modern 125s which are 2 inchs shorter. Use 3/8th thinner glass and two braces.
I love this 135.. no braces is the best thing ever. Although the glass does bow out alot. About 1.4 or more inch at its furthest when filled.
You can barely see the date but it says sept 13th 1982. Honestly id take this over any new 125g. The aqueon and marineland tanks t today are poor quality. Took me 3 stores and 15 tanks to find a 20g breeder for qt that didnt have bad seems.
And ive seen 5 year old Marineland tanks where silicone is already falling apart. Alot of modern tanks use very thing silicone inside too. Silicone should be as thick as the glass for inner seals. Yet these 125 and 150s in pet stores are so paper thin itll be falling apart in just a few years