Red planet bleaching

[Tuoixuanxanh]

I having issue with red planet keep bleaching but other sps are doing okay and growing. Check all parameter are good.

 

[nautical_nathaniel]

What are your parameter values? Any significant changes made to the tank lately?

 

[speedstar]

Have you checked magnets for rust or for stray voltage?

 

[DMG Reef]

Red planet can be finicky until it settles in. Mine has gone through about 3 color shifts in the 5 months I've had it. If your other corals are doing good, I wouldn't make any changes to your system. Maybe move the RP lower in the tank and let it acclimate slowly to your lighting.

Sometimes a knee-jerk reaction to just one coral creates problems for the other livestock. Good luck.

 

[saltyfilmfolks]

Move it to a different spot with less light.

 

[roberthu526]

Sounds like green skimmer for me. Acro and monti all doing fine while green skimmer lost all tissue. Got a new frag and started under an overhang in shadow and it seems to be doing fine so far. Maybe you can try lower light too.

 

[KrisReef]

I've thought mine was bleaching, but it turned out that the new growth was so fast the ends were all white. Could this be what you are seeing since all your other corals are good?

 

[Tuoixuanxanh]

Nothing change lately. No electric cord in the DP tank. I have it for 7 month and 3x3" colony. It bleaching on the base out.

 

[jda]

Frag or Colony? What are the actual parameters? What is the light? Do you have any idea of a PAR number where the coral is? Does the coral have green in the darker/shadow parts of the coral? Do you artificially strip the water with GFO, LC or Organic Carbon?

Do you mean bleaching like a lightening of the skin, or near-death kind of thing?

Red planet is a pretty adaptive coral that can handle a ton of light and become solid, monochrome red with whiter new-growth tips. It can also be red with green inner branches and underside when under lower light. Red planet is also tolerant of many different levels of building blocks from nearly detectable to quite a lot - zero would be bad, like any acropora (not really a concern unless you are using GFO, LC or organic carbon).

 

[jda]

Is it bleaching at the base, or dying? If it is dying, then this is usually point-source light shading as colonies get larger. This can sometimes happen with really high N and P numbers too.

 

[afartindolphin]

Does the coral have green in the darker/shadow parts of the coral?

What are your thoughts on this @jda ? I definitely notice some very fluorescent greens in slightly shaded areas on some of my acropora.

 

[jda]

Depends on the coral. Sometimes it is normal and other times it is tell you that it needs more light. This is normal for a red planet under lower lighting.

 

[acro-ed]

How old is the tank? Have you made any changes (new skimmer, large water change recently?). I had a similar issue with a Christmas Mirabilis (similar coral; patchy bleaching near the base) when I moved my 150g into my 300g. I still can't explain "why" because the parameters were stable and other acros were fine. It ended up recovering and growing back over the dead spots on the base. The best I can figure is it didn't like all that new water and/or the rapid change in nutrients (they dropped off quite a bit by adding 100% "new" water volume). It grows quick when it's happy and dies quick when it's not...

 

[Tuoixuanxanh]

Here are the pictures.

View attachment 20181109_145810.jpg

View attachment 20181109_145715.jpg

 

[jda]

Is it getting so big that it is shadowing it's self from the point-source light? The death at the base of larger corals is why people add T5s to their LEDs as stuff grows (and some better color).

 

[Braves Fan]

Trying to learn something here :) I don't understand this ,, Ok , I can buy that a coral can get big enough that the base doesn't get enough light and cause that base to die ,,,, I am guessing that the rest of the coral would be fine,, here is the part I don't understand ,, how does adding T5s to a LED system help the base of the coral from dieing? I always just thought reefers did that to get better color on their corals ,,,

 

[jda]

It adds the light from more angles and facets. You don't see death from below with VHO, T5, PC, MH, etc. This is nearly exclusively a LED thing.

Some people think that it is spectrum too. Lasse has some evidence that red or green (forgot which) light penetrates through the tissue to get energy farther down in the coral that is otherwise shaded.

My apologies for the Horrible photo, but this colony is about 11-12 inches across. Notice the white growth edge on the encrusting part as well as new growth at the bottom. All of this in shadows. These are hard to photograph since the bottoms are mostly hidden in my tank.

 

[Braves Fan]

I didn't know this :) I am re booting my system ,, a major make over if you will ,,, maybe I need to get me some T5s for my Radions ,,, So ,, what kind of T5 bulbs are we talking about here ,, I am guessing white of some sort,,,

 

[jda]

Blue Plus are popular in an AquaticLife fixture.

 

[DesertReefT4r]

Blue plus is the way to go. If you get a 4 bulb fixture you can run 2 GE 6500K bulbs, they give great color to the corals.