The HM can be used as a forground if you are good at trimming plants, or you have a really large tank! I hacked away at it the otherweek and no it has really bushed out and thickened up.
About 3 months, until glosso too over it, but it didn't grow much in those 3 months and most of it turned dark green at one stage.
HC likes a lot of CO2 and Nitrogen, if it wasnt any of those then it is just you :!: