Hmm. didn't know excel killed val.. no wonder i lost mine.. I've always delt with hair algae w/ rosy barbs. a pair will get the job done usually. usually I go w/ long fins as they can be rather aggressive fish, but the LF variety seems to be more docile or simply can't move as quick. but w/ a pike and jag.. short fins might be fine. You may have to replace them every few monthes or so if the pike or jag catch them.. lol. But ime they prefer the hair algae, and won't eat your plants. Barley also works well for many people, personally i've never had luck useing it.