Quote Originally Posted by Hotrod32487
How serious is the issue of rocks leaning against glass? What are your opinions on it? In my tank i have a good size one leaning against the glass with others stacked on top in my 55 gallon
When rocks are leaning on the glass, they create a pressure point in a very particular section increasing the chances of a possible crack in your glass. Many people do put rocks against the glass without any kind of failure but the oppurtunity for disaster does exhist. Also, areas where rocks are up against a wall, stagnant water areas are created. In other words you have ares where the water is not flowwing and detritus builds up.

Christopher