I've done 3 water changes over the course of this week on my BC29 using R/O with Instant Ocean but the
Cyano always grows in the center towards the front of the tank even after a water change. I sucked out all the sediment in the back chambers. I have a Sapphire
skimmer, Purigen bag in the 1st chamber, Phos bag in the 2nd chamber, and a purigen bag with Chemi Pure Elite in the 3rd chamber with a Rio 6hf pump. If I adjust the flow onto the
cyano it rearranges the sand. Not sure what else to do other than go crazy. Current stock is 1 saddleback, green
BTA, zoas, xenia. I feed the clown every other day and only once during that day. No
nitrates or
phosphates show up when I test the water.
