Cyano and LEDs?

[Enigma]

High bio load. Zero phosphates using the Hanna Checker. 0 Nitrates on the ELOS test. RO/DI water. Changed carbon and ROWAphos last week. Not skimming, as the skimmer still isn't producing foam since I changed the reactor media.

Haven't had to remove film algae from the glass in five days.

The cyano issue was very close to being resolved, so this is a bit shocking. Nothing has died. Everything is accounted for.

The LEDs have 40 degree optics.