I'm actually out of town, but my roommate contacted me tonight to tell me that the 215g tank we've slaved over for months has developed several cracks in the glass all of a sudden. We have rock glued to the back glass over most of the aquarium, so we won't know until later if they exist elsewhere, but at the moment there are three large cracks and they appear to be isolated inside the overflow box. Shane is draining the tank and has transplanted all the plants to other tanks. Luckily there were no fish in the tank yet.
I may learn more after we disassemble it, but I'm wondering if you have any theories on why this failure may have occurred? I can think of three possibilities... (1) during manufacture, the glass didn't break cleanly and a chip or tiny crack was overlooked and covered up by the plastic trim, (2) the 500 watt (metal, submersible) heater that was located in the overflow box might have affected the glass on one of the couple occasions when the overflow box was without sufficient water and the heater was on, (3) my construction of the stand was faulty in some way and introduced stresses to the glass.
I would find it a bit hard to believe either of the last two options occurred as the glass is pretty significant and the construction seemed reasonably solid. The tank has had water in it for probably close to two months now on and off. Obviously it would be great if it was option one, but I don't know if there is any way to prove it short of removing the plastic trim which might destroy any evidence there is.
The tank is by Oceanic, I believe they have a warranty, but showing a defect might be challenging. I'm basically looking at starting over at this point, I would like to avoid having to buy a new tank again though if possible. If I did though, I might consider having it built with thicker glass and without trim or middle support. I would probably also revisit my design for the base, though I would hate to have to rebuilt the cubes and have to redo all the rock on them. I guess I would think twice about the rock on the back glass due to the (presumed) toxicity problems we encountered, but it looked nice so perhaps I would just make sure to have aquarium safe silicone this time and seal over any exposed liquid nails as much as possible.
I can't believe it... we were so close to completion... and while all is not lost, it'll probably be months until we can be going again. :-(
Michael
I may learn more after we disassemble it, but I'm wondering if you have any theories on why this failure may have occurred? I can think of three possibilities... (1) during manufacture, the glass didn't break cleanly and a chip or tiny crack was overlooked and covered up by the plastic trim, (2) the 500 watt (metal, submersible) heater that was located in the overflow box might have affected the glass on one of the couple occasions when the overflow box was without sufficient water and the heater was on, (3) my construction of the stand was faulty in some way and introduced stresses to the glass.
I would find it a bit hard to believe either of the last two options occurred as the glass is pretty significant and the construction seemed reasonably solid. The tank has had water in it for probably close to two months now on and off. Obviously it would be great if it was option one, but I don't know if there is any way to prove it short of removing the plastic trim which might destroy any evidence there is.
The tank is by Oceanic, I believe they have a warranty, but showing a defect might be challenging. I'm basically looking at starting over at this point, I would like to avoid having to buy a new tank again though if possible. If I did though, I might consider having it built with thicker glass and without trim or middle support. I would probably also revisit my design for the base, though I would hate to have to rebuilt the cubes and have to redo all the rock on them. I guess I would think twice about the rock on the back glass due to the (presumed) toxicity problems we encountered, but it looked nice so perhaps I would just make sure to have aquarium safe silicone this time and seal over any exposed liquid nails as much as possible.
I can't believe it... we were so close to completion... and while all is not lost, it'll probably be months until we can be going again. :-(
Michael