To rebuild a tank it is very easy, just very time consuming, patience is the key. The rims are hard to get off, but something like an Olfa knife helps. The most important thing is the glass must be absolutely clean. Also maybe part of the decision making process would be if the glass is tempered or not for drilling for the overflow. If it is, still not a deal breaker because you can get a new piece of glass. I think Melvb has a YouTube video out there where he visits the planet aquarium factory and you can watch someone build a tank. You can look for a a lot of helpful hints there. Also I just redid a 25g IM lagoon, you may get some info from that build thread. I would also just sand the chip a bit with a dremel to take off the sharp edge. Depending on the glass thickness you can modernize the tank by eliminating the plastic trim and eurobrace the tank.
Just some food for thought.
This all started while perusing the local Offer Up ads. I noticed that @Innovative Marine had a IM25 lagoon in their Blems and seconds. I had bought a couple tanks prior from the @Innovative Marine warehouse and was very happy with what I had got from them. The ad stated that this tank had a...
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