I have two cicjlid tanks, 130g with 2 green terrors and 1 dollar, and the other tank is 90g with 2 dovii. Iv noticed the gt tank is soo boring, thinking its too big for them. Would it be a good choice to put the gt's in the 90 and the dovii in the 130? I know the dovii could use the extra room, biggest one being 6-7 inches. The biggest gt is about 7-8 inches. Any help is appreciated!!