I recommend you read these articles. Elassoma gilberti was, up until 2009, considered to be the same species as Elassoma okefenokee.http://www.nanfa.org.../elassoma.shtmlhttp://www.nanfa.org...Egilberti.shtml
Easy to care for if fed live grindal worms, live blackworms, thawed frozen bloodworms, thawed blackworms, live baby brine shrimp. Yes a pH of 7.5 is fine for them. I bred my Elassoma gilberti in both pH 6.5 DH 0 and pH 7.5 DH 17. I kept my E. gilberti at both room temperature and in a heated tank with no problems. The biggest issue was that the fry weren't surviving in large numbers in the same tank with the parents. I recommend not one but two 10 gallons and moving them back and forth between the two every month and a half.