higher temperatures and good frozen/pellets will ensure fastest growth rates... my texas is 8-9" after 2 1/2 years and is a female... she is big!! my dempsey was slower growing with these conditions but got to around 7" in a 1.5 years...RIP... texas reaked havok.... on all my community and during the night so never saw any deaths coming... apparently they can be highly territorial and she don't lock jaws... she hits and rips till they run and eventually die... this encludes a much larger midas i tried to keep with her... she wanted to breed, he didn't fertilize eggs and felt wraith... good luck with your tank and keep an eye on your texas.... she did lock jaws with dempsey but when he didn't fertilize she killed him... the Midas just ran...