Tamerisk question

Hi ryen i got the tamerisk in 95% pumic 5% akadama n native clay and sumerged in 5 gal bucket of water and got a cpl of cuttings in my aeroponic chamber in the chamber im notice this white nodes but there coverd in a clear gel is this normal n do you use an aeroponic chamber for your cuttings . I have a black mangrove i pumice n volcanic rock no drain hole since its a water plant water filled to the top. Growing beautiful do i treat the tamerisk the same way as a black mangrove. Thanks for sug, n time.