This has me a bit concerned too, my 175g bowfront was used when i got it 7 yrs ago

I assume its coming at some point though. I was thinking about that last night, at what point do you replace a tank, does anyone really know how long they're good for anyways?[/quote]

I had read from somewhere long time ago, it said the tank has 10 years without moving from place to place too much. If your tank are using some kind of a wavemaker it will shorten the tank's life 1/3.

I think Roger at Tunze has estimated a 10% lifespan reduction with the use of a wavebox but there are no real facts regarding this. We're all playing a risky game long-term wavebox or not lol.

awesome. I have no idea how old my tank is. another kick in the pants for buying a used tank.

I googled it, and it seems silicone has a life expectancy of 10 years. There would obviously be many variables here: size of tank; water flow; etc.

One thing I've learned about my tank is that Aiptasia, Majanos and Valonia are indestructible. They are the dandelions of salt water.

safe to say i would replace my tank before 10yrs came up just to be safe, i mean you can get a tank for a few hundred but having it crash to the floor is gonna be 10 times that amount in damage and replacing stuff lost......i would say the same for stands too to be honest:):) no real way to say for sure too many variables to conside just better to play it safe i guess:)

I don't know about the mojanos only because I haven't gotten any yet :lol:

I scoured for valonia before the transfer. I'm sure it was all gone and tiny little bubbles are appearing. Thankfully in the hardest to reach nooks and crannies too it's a special thing.

That was why I'd rather pay a little bit more but avoid to buy a used tank, because I know it is going to give me peace for a 10 years period, especially I live on the top floor of an appartment, really don't want anything to happen, the damage would cost more than just buying a new tank. So, every time I moved, I just bought a new tank.

Oh and the old pump will only die the day after the Boxing Day sales are over so you have to pay full price for the replacement.

Tom R