I came home last night to find that my blue/green horrida had started to RTN. In retrospect, I think I may have noticed the beggining of the event yeasterday morning, but just thought that the coloring was off due to there being no lights on in the tank.
Anyway, I get home last night and there is a large patch of tissue recession, centered on the "trunk" of the colony and spreading out to each of the "branches". I qucikly pulled the colony, and fraged off each of the branches above the tissue recession and mounted them on two frag plugs. It being very late I didn't have any time to test ALk, Calcium and Maganesium. But I will test them tonight.
I did take a look at some of my monitors.
Salinity was 1.026 (My normal salinity)
Ph was 8.10, the PH swing for the previous 24 hours was 7.88-8.20 (this is my normal swing)
temp was 78.2, the temp swing for the previous 24 hours was 77.7 -79.7
I had performed tests (salifert test kits) four days earlier, they where
Calcium 460
Alk 9.0
Mg 1260
Nitrate undetectable
Phosphate undetectable
After performing the above tests I raised my Magnesium to 1350 using Randy's Receipe (Mag Flake and Empsom Salt)
Three weeks ago I started using Phosban, although my phosphate where undetectable, I had some hair algae in my overflow and had a Brown algae (don't know what type - not diatomes) that had taken hold on one of my rocks and was spreading. Interstingly this algae had spread around the Horrida, but was not touching it - it seemed to "avoid" the coral.
Two weeks ago I started using active carbon filtration (in a reactor), as opposed to passive filitrateion wich I had previously used.
The Horrida, was about six inches below the surface of the water and in a high flow area.
This coral was doing amazingly well until this event. One of the fastest growing corals that I had (this is a SPS tank), with great coloration. None of the other corals where effected, and the frags that I made last night looked to be doing well this morning. I had put what was left of the colony back into the tank, just to see what would happen to it and as of this morning the tissue recession does not have seemed to spread.
Any thouhgts?
Anyway, I get home last night and there is a large patch of tissue recession, centered on the "trunk" of the colony and spreading out to each of the "branches". I qucikly pulled the colony, and fraged off each of the branches above the tissue recession and mounted them on two frag plugs. It being very late I didn't have any time to test ALk, Calcium and Maganesium. But I will test them tonight.
I did take a look at some of my monitors.
Salinity was 1.026 (My normal salinity)
Ph was 8.10, the PH swing for the previous 24 hours was 7.88-8.20 (this is my normal swing)
temp was 78.2, the temp swing for the previous 24 hours was 77.7 -79.7
I had performed tests (salifert test kits) four days earlier, they where
Calcium 460
Alk 9.0
Mg 1260
Nitrate undetectable
Phosphate undetectable
After performing the above tests I raised my Magnesium to 1350 using Randy's Receipe (Mag Flake and Empsom Salt)
Three weeks ago I started using Phosban, although my phosphate where undetectable, I had some hair algae in my overflow and had a Brown algae (don't know what type - not diatomes) that had taken hold on one of my rocks and was spreading. Interstingly this algae had spread around the Horrida, but was not touching it - it seemed to "avoid" the coral.
Two weeks ago I started using active carbon filtration (in a reactor), as opposed to passive filitrateion wich I had previously used.
The Horrida, was about six inches below the surface of the water and in a high flow area.
This coral was doing amazingly well until this event. One of the fastest growing corals that I had (this is a SPS tank), with great coloration. None of the other corals where effected, and the frags that I made last night looked to be doing well this morning. I had put what was left of the colony back into the tank, just to see what would happen to it and as of this morning the tissue recession does not have seemed to spread.
Any thouhgts?
