Dieing SPS

[SeaHorse_Fanatic]

If you change out your MH bulbs, make sure you don't light shock the corals. Add egg crate or raise the lights or reduce photoperiod for a week or two.

[wickedfrags]

sometimes SPS just go white...............I had a tank with perhaps 125 different SPS, and if 90-95% were happy, well the tank is doing fine IME. remember that these corals come from all over the world, and it is impossible for them to all be in their ideal environment as it pertains to light, current, salinity water temperature etc.

[whatcaneyedo]

I guess I should have asked, when you say they go white do you mean they're bleaching or is the flesh disappearing to reveal the white skeleton underneath?

[fishytime]

I doubt very much that old bulbs would cause rtn......maybe loss of color or browning, but not rtn ( if thats whats happening).....your calcium is a bit high and that could be the cause.........whats your Mg at?

[gobytron]

Originally Posted by fishytime

I doubt very much that old bulbs would cause rtn......maybe loss of color or browning, but not rtn ( if thats whats happening).....your calcium is a bit high and that could be the cause.........whats your Mg at?

+1

I find alk/ca are usually the culprits in my own experience.

[reefermadness]

Originally Posted by whatcaneyedo

I guess I should have asked, when you say they go white do you mean they're bleaching or is the flesh disappearing to reveal the white skeleton underneath?

Very important question.........these are two very different ball games. Another very important question is how long these SPS have been established? If they are fairly new....well that changes my answer as well because some SPS just do not do well in a captive reef.

Originally Posted by fishytime

I doubt very much that old bulbs would cause rtn......maybe loss of color or browning, but not rtn ( if thats whats happening).....your calcium is a bit high and that could be the cause.........whats your Mg at?

I agree that old bulbs will likely not cause RTN....but loss of colour. I dont think calcium would be the culprit though either......alk maybe....either out of wack or not stable. Other possibilities is a nutrient problem or some kind of contaminant in the water.

[Milad]

white as in flesh disappearing and skeleton showing. They all have turn super bright white on the first day, then starting going yellow brown by the 3rd - 4th day. When they are brown, there are about 20 hermits that show up and chill out on them.

The first large one to go was from a tank tear down of reefer rob i believe. I got two corals from him, the second one is still going strong.

The second large coral to go was from oceanic corals thats was in my system for several months.

The last two are from whatcaneyedo, they are smaller but were really doing well.

ill have to check the mg, as I havent checked it in awhile.

[cwatkins]

I'd blame the bulbs. I had the spectrum on both my MH 150's go at the same time (thus I didn't notice it because each looked identical) until 2 Acro's bleached whiter then white. After a week or so they turn into a algea farm