Mangrove on frag tank ?

[yajur]

I planned to keep two to three numbers of mangrove on my frag tank and it possible to keep in between the frag plate ?

And they need substrate or just can we immerse the root inside the water ?

[k4ndyk1ng]

I have mine immersed in water, they don't need substrate, they vary in size,

[d2mini]

They will eventually need substrate.
http://www.nano-reef.com/topic/332527-mangrovesaquariums-and-you/

putting the seed pod(s) in the sand as opposed to have them floating in the water, you will get far better growth using this method. If they are always floating in water the mangrove will not thrive and possibly wither away, as it can cause the mangroves seed pod to put too much energy to producing roots(this is not always true but coupled with low lighting-at least weak growth-at worst death).