I am going to go with the two RHP's. In an effort to save money, if I get two 80W RHP's to be used, 1 on each side of the divided T8, is that fine (using a Herpstat)? That way, eventually down the line, if I remove the divider and open up the T8, and get a second T8, I can keep one in the original T8, and the second in the new T8. Question being, of course, is an 80W on each divided side too much? Or will it work?