Hope everything is well Sirichok!!!
That particular mangrove is not a species we see here in the US. Common English name is "tall stilt mangrove".
I would guess it's name comes from its average/max height of roughly 30 meters! The Red Mangrove, which is common throughout the Southern US, Hawaii and Puerto Rico, is what we have access to here, it being endemic. I falls within the same genus as the Rhizophora aciculate, yet the aciculate is only found throughout Asia and Australia. The only ecological factor that may be of concern is that their optimal location is "mid-estuarine" with a salinity of 8-15ppt, which is much lower than reef salinity. They can handle a salinity up to 65ppt, but for what timespan, it is not documented.
Considering it's range and ecological niche, I don't believe it is the care of the Mangroves that could be causing problems, unless as was mentioned, they were osmotically shocked by going straight to 35ppt.
Would love to see some picture updates when you get a chance!!