What kind of rocks are those? I'm just wondering cause they're stacked pretty high and look like they could come tumbling down and break your tank bottom. Are they heavy?
Thanks for caring Friends and for all the kind replies. Yes that pile is big but its stable. The large rocks on the bottom are directly on the base glass and 2 huge clay pipes are hidden behind them, touching the background (no gap between them). The upper rocks are smaller and lighter and are placed directly on the large clay pipes, supporting against the background...that rockwork looks amazing. but it kinda stands out in color a little too much. but i still looks great. it kinda scares me though. is it very stable?