Cabbage Dying

[elpezpr]

Hi. I have a 155g reef with vaious mushrooms, bubble coral, leathers. Lately my Cabbage Leather (about 4 years old) started dying. I've been fighting a black cyano with water changes every week and sucking it up as much as I can with little success. The patches don't grow over the coral but I'm guessing it puts somthing in the water column that is affecting just that coral. All the other corals are fine. The tank itself is about 6 years old. No DSB. Everything is in place except the UV light that no longer works but I keep all my other aquariums without one so I think nothing of it. All the water tests are good. What do you think? Should I try chemi-clean or Red Slime Remover wich I've never used before? I've never fed the corals. I just dose Calcium, Strontium and Iodine.

Thanks

 

[ACBlinky]

Can you post the actual water parameters? With weekly water changes it's probably not much of an issue, but it might help to have the information. What type/amount of lighting are you using? Are you running carbon? If not, I'd start there - if there are chemicals released by the cyanobacteria that are affecting the cabbage, carbon should help absorb them. Carbon is a good idea after running a product like EM, chemi-clean or red slime remover for the same reason - you don't want the chemicals released by the dying cyano to hang around and poison anything in the tank.

Sorry to hear you're losing the leather, S. dura is one of my favourite softies.

 

[elpezpr]

Hi. The tank is lit by two 96w PC's. The leathers and bublbles are at the top of the tank (about 6"-8 " from waterline). Everything below that are mushrooms. Tank parameters are:

SG- 1.024
pH- 8.0-8.2
Alk- 7-8 dKH
Temp- 78-79 F

Today I bought 3 bags of Chemipure and another bucket of salt to keep with the WC regimen. I hope this helps.