Mangroves (assuming Red, since the others don't do well in aquariums) can grow in just about any water level. Just don't shock them with salinity changes. They seem to handle rapid downwards shifts in salinity much better. They can be difficult to balance, since they are very sensitive when young and massive house-sized trees when older. With a young mangrove; avoid shocking it with constant changes in salinity, avoid damage to the leaves, do not damage the roots, and do not damage the growth tip. They just don't recover well when seedlings. You will eventually need to prune the growth tip and branches (they grow very big otherwise), but doing so too early tends to kill the plant. Spray the leaves every couple days to help wash salt off. Make sure it has enough magnesium otherwise it may lose the ability to remove salt.
They are pretty neat plants, but don't expect them to clean the water much. They are rather slow growing. Nice as a decoration or part of the tank environment, but not much of a natural filter like FW plants or SW macroalgaes.
Not sure why everyone knocked Piranha86's idea so badly. It was entirely right, although cutting the salt amount in half and doubling the time of the transition would have given more of a buffer against mistakes causing a crash. The main risk isn't that the bacteria can't adapt (it isn't the individual bacteria that are adapting, but the entire population as a whole), it's overdoing the mix to the point where they don't get the chance.
They are pretty neat plants, but don't expect them to clean the water much. They are rather slow growing. Nice as a decoration or part of the tank environment, but not much of a natural filter like FW plants or SW macroalgaes.
Not sure why everyone knocked Piranha86's idea so badly. It was entirely right, although cutting the salt amount in half and doubling the time of the transition would have given more of a buffer against mistakes causing a crash. The main risk isn't that the bacteria can't adapt (it isn't the individual bacteria that are adapting, but the entire population as a whole), it's overdoing the mix to the point where they don't get the chance.