i cut the coral way after everything started. i think that the problem is Seachem Marine Buffer. I usually use Kent Marine dkh buffer, but this time i used SMB. the reaction started almost right away and the corals didn't look all that great after the water change with this product in the new water. while back i had similar reaction of the corals to Kent Marine RO Right, but the reaction was so bad that all xenia died overnight and other corals looked beat up. Kent Marine didn't have any comments on that and didn't take the bottle back for testing. interesting things that i found out though, is that not only Seachem Marine Buffer has the same or similar ingridience as those in Kent Marine RO Right, but also the two companies used to be one company that split away into two. last night i did another water change and today corals are comming around and looking better already in one tank and fox coral looks normal again in another. for this new water change Kent Marine Buffer dkh was used, a product i always used to buffer my water and everything quickly comming back to normal. i say, if something works, stick to it and don't try other products. one pieace that i cut off of kenya tree had made it and so did the kenya tree itself.