Bleaching acros

[Tarolisol]

Well over night my 3 favorite acros bleached the only thing ive done is add small amounts of baking soda ever two days to bring my alk up. What can i do?

[muck]

Just bleached or did they RTN?

[Tarolisol]

Ok well not i need to know the difference. Could you explain to me what happens in each situation.

[mr_alberta]

In bleaching, the coral loses it zoanthelle, in RTN, the tissue actually comes off of the skeleton. Bleaching can be fatal but isn't always, but RTN is fatal 100% of the time (assuming the whole colony RTN's). Also, it seems that RTN can spread to other corals as well.

[Tarolisol]

Well im not sure what it did then, all i can tell is its white now and wasnt the other day, are there any sure signs of RTN.

[Aquattro]

Sean, pull one out and smell it. If it doesn't smell like acro, it lost it's tissue. If it stinks. it's bleached and can come back.

[Bryan]

IMHO one of the triggers for RTN or STN is alkalinity that gets out of whack. I have experienced this many times when the alkalinty rises or drops unexpectantly.

[Tarolisol]

Ok ill give it the smell test tonight. I hope it stinks

[Tarolisol]

Well i havent had a chance to smell the coral yet but one of the acros has color in a few of its branches still, does this mean anything?

[mr_alberta]

Did it start losing color from the bottom up or the top down? RTN is usually a bottom up kinda ailment.