I have a large piece of driftwood in my 55 gallon that I have had for a looong time. It's one of the LFS
ones with the slate on the bottom. This is the third tank I've had it in. In the last couple of weeks I've noticed that it is disappearing....ie getting thinner and thinner....like it's dissolving. I put my hand in yesterday and the wood seems very fragile. I do have two BN plecos who keep it clean, could they be eating it? Or did it finally decide to rot? The pH of the 55 is the same as the 30 gallon it was in for 1.5 years before.