Crinum Calamistratum

[russianaquarium]

Hello everyone, i am back, how are all your tanks doing? I hope they are doing good. Well so i bought

Crinum Calamistratum​

and put it on my driftwood, and now its growing roots. Can I grow this plant on driftwood or does it have to be in substrate? Thats my main question, also while i was gone I bought clay based substrate (Seachem Flourite Planted Aquarium Natural Substrate) it is redish black substrate and its clay based. Is this stuff any good for plants? Thanks
P.S. I will circle the Crinum plant.

 

[Delapool]

I had thought this one was ok in substrate but have only seen it at auctions, never bought it. Hopefully someone has kept it.

I do have the seachem flourite (red) mixed in with gravel and pellets. Seems fine. I was worried it would be sharp but actually haven't had a problem with it.