Causes of montipora bleaching or RTN?

[peiloy3196]

I seem to be having a similar problem. I started a separate thread before i found this one. Does anyone have any ideas?

http://www.reefcentral.com/forums/showthread.php?t=1890465

 

[Tony Romano]

I seem to be having a similar problem. I started a separate thread before i found this one. Does anyone have any ideas?

http://www.reefcentral.com/forums/showthread.php?t=1890465

Salinity too high, rapid water chemistry change, low K+.

I lowered my salinity about 5-6 weeks ago, from ~1.026 to 1.023. My test cap is thriving! I also have learned the hard way to fix water chemistry slowly over weeks, not hours or days. I can tell when K+ (Potassium) is low, monti caps fade in color.

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[peiloy3196]

Thanks Tony. My Salinity is at 1.025. Do you think that this might be an issue? I do 10% water changes every 2 weeks, wouldn't that replenish the Potassium?

 

[Tony Romano]

Thanks Tony. My Salinity is at 1.025. Do you think that this might be an issue? I do 10% water changes every 2 weeks, wouldn't that replenish the Potassium?

Could be, I am still verifing my results, bring salinity level down slowly. Also make sure makeup water is the same or slightly above/below depending on direction you want level to go. Weekly water change is better IMO. I am doing small a sm daily using my controller. If your NO3 and PO4 are a true zero, your corals may need some feeding and AA.(Scares the hell out of me) The gurus at ZEO clued me in on the salinity and K+ with monties. K+ is an issue (or seems to be) with needle wheel skimmers. If monti, Sylophora type corals seem to lose virverance or fade try dosing some K+. I am adding 2ml of ZEO every week or so, depending on color of my little itty bitty living corals. (plus a new one that is doing better.

I have really noticed it takes sps a long time to bounce back, weeks, months. Mine are now winning war with algae and cyno.:bounce1::bounce1:

Consistancy is key...more than anything else. In the past I changed chemisty, flow etc too fast.