Id prefer to you be honest than tell me something it isn't. I understood what I was taking on when I bought the Arowana, I did not think for a minute 340L was going to house what I currently have. The pleco's are not commons, only 1 is a common, the rest are very slow growing compared and they can easily be moved once they hit max size, I used to work for a playground company that dealt with acrylic and have a huge cutter in the wharehouse, getting another tank built within a year is not going to be a problem, I'm still considering a heated pool. You say my tank is overstocked but has SO many pvc,clay shell ornaments and everything, everybody has its own home and is more than comfy, for now, I know I sound a little stubborn but trust me, everybodys happy, I already own a fish room with 6 tanks inside it, I will be building something to better house them. Can you please tell me how I need 4000+ for the fish I keep? I didn't intend on getting the gar, it was an idea. How is 2000L not enough for 3 tinfoil barbs an Arow and some plecs? Also, with the clown, I had 4 clowns originally, the other 3 were smaller than the one I currently have and I watched him kill 2, I had to move 1 and it went to a friends, believe it or not, I watched this dude completely tear the others to shreds, he is fine on his own Id rather not take the risk again. He fought that aggressively with another he popped the swim bladder on it within 30minutes of it being in the tank. (Do not try and tell me it was my water quality, I watched it happen) By the way, I have the time the space and money to fully house all of my fish. The 3 tinfoil barbs came out of a 60L tank, I am glad I rescued them when I did. I originally wanted to build a huge acrylic show tank for them. But now you have said 4000L I am worrying. If you don't mind me asking how do people keep things like a RTC and Arow in a 2000L fully set up? I am not doubting you I just seriously didn't think it would exceed 2000L.