ora green birdsnest lost green polyps

[brob22]

doese anyone no what this indicates. the polys are almost whight

 

[JAustin]

Bleaching maybe. Do you have a picture and what's your lighting, tank flow, coral position in the tank?

 

[brob22]

sorry i dont have a pic
lighting is 6 bulb sunpower
flow- 2 mp40s
sro 1000 skimmer/ 70 gallon liverock sump- vodka dosing
50 gallonb display tank.
thanks for ur help.
my montipora cap is also bleeched by the way.

 

[allsps40]

Try moving them down in the tank sounds like to much light.

 

[brob22]

Try moving them down in the tank sounds like to much light.

unfortunately they already near the bottom

 

[danil]

you can try to find some 'shady' spot for it. Or put him half in shade and check the color in a week.

 

[brob22]

you can try to find some 'shady' spot for it. Or put him half in shade and check the color in a week.

are thet really that low of a light demanding sps?

right now its about 17 inches away from my sunpower

 

[DustinB]

My 4 bulb sunpower is bleaching almost everything in my 40B. I can't even get the green base on my red planet on the sand bed because its still too much light. My birdsnest is white as well. I cut the lights back to 5 hours and the fixture is 13" above the tank. The intensity is still too much, the reduce photoperiod isn't helping. I'm going to try some mesh to slowly acclimate everything.

 

[JAustin]

My ORA Green Birdsnest gets 700 PAR and is very bright green and brown under the polyps. The color is very nice. Birdsnest needs a bunch of flow, and IMP medium to high light. In low light conditions I've observed this coral brown out and STN from the base up.

PICS!

 

[allsps40]

I just saw you are vodka dosing. I highly recommend stopping that. I did it for a while and all my sps paled out really badly. I could not feed enough to keep enough nutrients in the water to feed the sps. Some pics so show you the difference with and without vodka
With

Without

With

Without

With

Without

As you can see vodka dosing made all my sps super pale, I even slowly lost a few.

 

[KyleCT]

Wow, why does vodka have these effects?

 

[WaffleWalffle22]

Nice sand!

 

[allsps40]

Vodka dosing makes the bacteria grow like crazy basically. The bacteria use no3 and po4 to grow this is how we get a ULNS. The water becomes so clean that there is no food (no3) for the sps so they starve and pale. Many people have great success with vodka and other carbon dosing methods. However it is a very fine line to having a great looking corals and a super clean tank to have a nutrient stripped tank. In tanks where po4 and no3 are low already vodka dosing is not needed, water changes and a reactor should take care of the rest. In tanks that are heavily stocked or have no3 or po4 issues vodka dosing can be very effective. Try stopping the vodka for a month and see if your corals color up, I bet they will. Or if you feel you must continue vodka dosing then add more fish and/or feed more and dose AA.

 

[2 TAZ]

I too have had color problems with the ORA green birdsnest. The ones I have now are verry pale to brownish looking pieces, My green poccillapora is as bright. I have tried in many different spots in a couple of different tanks varrying water flow and lighting from 400 watt halide down to 4 VHO bulbs in a 180, as well as leds and 250 watt halides and power compacts. They are super bright when I purchase them and within 1 month they loose there color. They seem healthy and still grow as well as my other birdsnest. I have tried in the past before carbon pellets and now after ther use and no change. It has puzzeled me for years and wish I could figure out why. If you're color returns please update you're findings.