Cyano annoyance

[deerhunter06]

93g cube auto water change 2 gallons a day with two 20 gallon water changes in the past month in an effort to lower nitrates.

On 8/1 phos 0 (ULR HANNA) nitrates were 10(Red Sea)

8/13 phos 0 nitrates 5

I dose alk with Kalkwasser in ATO it stays around 9 combined with my 2g a day water changes

I do run carbon That hasn’t been changed in awhile. Also I run MH for 9 hours a day which I just reduced to 8 but I also went from 250w to 250 super lumen.

Corals seem happy and have good color just can’t get rid of cyano. Any thoughts??? Should I just keep maintaining and maybe reduce MH to 6 hours ?

 

[magikfly]

PO4 should not bottom out unless you like dealing with dino's and other uglies. Get it up to about .1 and keep NO3 around 5. Then, manually remove as much of the cyano daily, get one of those battery vacuumcleaners. Lastly, start a competition between the cyano and other bacteria. I used Fauna Marin's Bacto Blend and Bacto Therapy. Worked out fine.
Just keep removing as much of the stuff and you should be fine in a few weeks.
Ofcourse, you could nuke them with Chemiclean, but then all bets are off...