Beating Cyano algae - Join me on my adventure!

[phillybean]

My "Adventure" started on another thread, not wanting to high jack it, here it is in it's glory!

Problem: Cyano Algae in Refugium.

Cause: Not 100% sure, but a mix of low flow, low oxygen, poor lighting, high nutrients are all options. Overall sub-par husbandry.

Misc Info: Fuge is about 25 gallons, "T'ed" return from Mag 5 with Valve open about half way. Maxijet 400 also in fuge. Separate heater to ensure temp stays the steady. 2" sand bed, small ball of Cheato which doesn't seem to grow much. Several pieces of small live rock and a 3" Mantis Shrimp. Mantis Shrimp is fed every 3 days a small piece of raw shrimp and sometimes
a hermit crab if they are causing issues in the display. No Cyano, HA or any other micro algae has turned up in the display. Only coraline, most purple but some dark green that turns to purple slowly. Cyano seems to recede when the lights are off.

The Plan:
Plan A - Turn off lights for three days
Move powerhead closer to the top of the tank to increase oxygen movement.

Plan B - Isolate Fuge from main tank. Perform daily 2 gallon water changes, siphoning out Cyano.

Plan C - Red Slime Remover - Last resort as I want to try to beat this one my own.

Photo Evidence:

This is a picture of the Fuge while the lights have been on for about 8 hours.


This is a picture of the Fuge after the lights have been off for 8 hours.