#plant

Hi guys so I’m relatively new to the hobby. I’ve a fully planted tank but they just do no seem to be growing. I have a gravel substrate and and currently using root tabs. I’m wondering if a liquid fertiliser might boost things. Wondering is this would be safe for my tropical tank for my...

My dad got this plant from Petsmart and it wasn't listed what type. Anyone know what type it is? Next week I may put in a half root tab next to it. It does have some black algae on it, if anyone know how to remove that I would be thankful. Or if anyone knows what type it is, I think it is Black...