I have a 5 gallon Evo 5 reef. I'm getting increasing numbers of aiptasia. I've applied Aiptasia X a number of times but as a some of you have posted, the aiptasia keeps returning in even greater numbers. BRS recently recommended Aiptasia F and discouraged the use of Aiptasia X. I haven't tried this yet. So if this doesn't work I'd like to try a pepperment shrimp but I'm worried it might kill my two sexy shrimp. Any advice?