[grknyer]

I bought these white button polyps and they turned abit brownish. Some are still white and any new growths are white. Has anyone every experienced this? All other corals in tank are healthy.This is the only one. Water changes are done every two weeks. Phosphates are 0ppm as are all others etc. nitrate..... Water changes are done with rodi unit.Someone has told me it might need iodine but I haven't put any in because I want to see if anyone on MR can help

	Manhattan Reefs Manhattan Reefs, the best aquarium community on Planet Earth!

	RODI High quality filtration systems used to purify tap water before it is mixed with salt or added to the aquarium for evaporative top off. Most municipal water supplies contain unacceptable levels of Nitrate, Phosphate, Lead, Chlorine, Copper etc. It is critical that these impurities are removed as some are toxic to reef organisms and others fuel algal blooms that can quickly overtake a reef display. Again, there are many brands and many configurations to fit most applications.

[crox99]

Do you have a pic of the white polyps?

[grknyer]

sorry about that. I uploaded the pics now

I dont think anything is wrong ,they are opening and look good ,one thing to note ,that poylps and some corals will turn a different color under different lighting .

zoos and button polyps tend to do that ,turn diff colors

Ronen

[Deanos]

Brown is their natural color.

[crox99]

They can turn white if their is too much light. they look healthy to me.

[lfsmarineguy]

look healthy but you may need more light for them judging from their foot extension off the rock.