hi guys,
I have been keeping zoas for 2 years, and recently found two colonies have some problem, the zoas in the photo (colony up in the middle of the photo) gradually shrink like in the video.
there is no pests, all the other colony is growing fine, anyone has some ideas why?
first, the tentacles gradually become very short and small, and the disc part gets smaller and smaller too, and now they dont close, neither do they stretch and open up , just like the state in the video 24 hours a day, no response to my water blow.
I have more than 40 colonies and only 3 got this problem, all the rest is doing well and some even reproduce very fast.
so I'm lost why this is happening.
checked the water parameter, No3 around 4, Po4 is also fine, in fact, I kept LPS in the same tank and they are all doing great.
if someone know what is wrong with this situation, please shed some light on me, very thanks!
I have been keeping zoas for 2 years, and recently found two colonies have some problem, the zoas in the photo (colony up in the middle of the photo) gradually shrink like in the video.
there is no pests, all the other colony is growing fine, anyone has some ideas why?
first, the tentacles gradually become very short and small, and the disc part gets smaller and smaller too, and now they dont close, neither do they stretch and open up , just like the state in the video 24 hours a day, no response to my water blow.
I have more than 40 colonies and only 3 got this problem, all the rest is doing well and some even reproduce very fast.
so I'm lost why this is happening.
checked the water parameter, No3 around 4, Po4 is also fine, in fact, I kept LPS in the same tank and they are all doing great.
if someone know what is wrong with this situation, please shed some light on me, very thanks!