I think my flow could be distributed better so i wanted to change my scape. It's but up for a year and a half. Is there anything special I need to do or can I just change the rock? If I can I'm not even taking them out of water.
*Update*
I don't know if any one call tell a big difference but I decided to stack the rock to create more swim throughs and places to hide. Was too afraid that the bta would move if I changed to the islands like I wanted to.