sorry....I was talking about Algae waffers or discs or rounds. Seen several names for them, but basically they are food for those types of fish.
I normally have to put them in at night when the lights have been out for an hour or so. Otherwise my other fish see them and they will harrass the bottom feeders & algae eaters trying to steal the meal.
Not sure how long your "new" light schedule is, but I founds it took several weeks to reverse my own algae problem. I saw slight improvements every few days, but it was not something that went away as quickly as it originally appeared.
Also I forget if it is the CEA or SAE but I know one type can get quite aggressive as it grows older. So I personally have tried to stay away from either one, and combat my algae with other means. (mostly by self control with my feeding & cleaning...plus my lights are down to 8 hours per day)
If I am reading this thread right, your only about 2-3 weeks into this new tank. As your tank balances out (which can take a few months) you will go through stages like sudden blooms of algae. I think you acted quickly to the problem, but I did the same thing, so my opinion comes from doing the same thing. While I might sound harsh, it is not meant to be.