Complete tank breakdown -- is it necessary ?
I was reading in an aquarium book that I have that after 2 or 3 years a complete breakdown of the tank is vital, due to stagnation of the gravel and plants.I have one 55 gallon planted tank thats been running for almost 4 years, and the other 55 gal. has been running for 3 years. I do weekly water changes along with gravel vaccuming, and I test my water as well at the same time. My fish and plants are all doing well, and my test results are fine too. Should I just leave them alone and keep doing my weekly maintenance, or should I break them down, remove all the plants, wash the gravel, etc.Please, give me your advice!!