Sorry for your loss......But it is now a well known fact JBJ NANO' cubes are notorious for up and cracking, be it one week or one month or a year down the road. There is presently a class action suit against JBJ on the cracking issues. First JBJ's response to all the cracked tanks was it was the shipper fault.........however after pointing out it wa not the shippers fault, it was a design fault, they then tried to cover it all up by refusing warranty on any tank that has ever had a mod done to it........as they were then saying it was due to excessive water pressure inside from extra pumps, or heat build up from extra lights etc........But the cracked tanks continued to grow. I have had two, that cracked in short order. One only had freshwater in it at the time and was only setup for 5 days.......they replaced it, and being a bit leary, I leak tested the new one, setup LR/LS to cycle, and 2 months later it too developed a crack...........propagating in the same exact area other crack started........They most always start in and around the rounded front corners...........If you look at recomoended specs for glass thickness you will find the NANO cubes are way too thin and then looking even closer you can see minute scratches on the glass, from the manufacturing process, which is akin to scoring glas with a glass cutter, but not yet flexing it to initiate the crack.......NANO cubes are way over priced, and poorly made when you get right down to it. An individual with 35+ years as an engineer with a major glass copmpany pointed out in the NANO-cube forum on another website that its design was wrong and the glass is distorted, scratched and improperly stress relieved after forming, and yet JBJ blew his opinion off as theory......with no substantial merit behind his observations.......There are literally hundred of posts regardoing cracked NANO cubes on that other forum.........as well as info on the class action law suit initiated.......The local shops around here had sold lots of them, and they did have quite a few returns from crack issues, and none of them carry the cube any more.....One shop in particular sold them as well as ther JBJ line of lights etc, which he sold a lot of, but after issues with the cubes, and his not ordering any more cubes, JBJ pulled his dealership and will no longer sell him just lighting components........A Nano cube by JBJ is a risk.......While the 24 gal are the most prevalent in cracking, there are now quite a few 12 gal sizes cracked, and even 6 gal are now showing up.........i would contact JBJ, and see what they will do about it..........if they replace it, and they have been good at replacing the cracked tanks, get the replacement tank, and put it up for sale on ----...... Its pretty bad when you can get a $10.00 perfecto glass tank, and drag it around, knock it around, drop live rock in it, bump into it, and it still keeps on ticking like a Timex watch...............but buy a brand new NANO cube, handle it with kid gloves, and watch it crack in front of your eyes with no additional help from the owner.....Lots of luck......I suppose you did find that other forum regarding the nano cube's? If not email me and I will send you the forum URL.
