Are fertilizers sufficient for my plants?

[boomer]

I'm going to give a carpet a shot in my aquarium. I'm thinking pygmy chain sword or something that resembles grass. I already have substrate, so switching to a nutrient-rich one isn't an option for me. I'm also hesitant about dirted tanks, I've heard they can be a real challenge to maintain. I'm currently using Seachem Flourish fertilizer to add nutrients to the water. Will this be enough to support a carpet? I'm using a common gravel substrate, so I'm assuming the nutrients should be able to reach the roots. Am I on the right track? If not, should I consider dirted tank?

No issue, really. Chain sword species generally grow similarly across substrates, within reason. Fine to moderately coarse gravel is acceptable, but avoid anything too large as it hampers bacterial decomposition. More significant is the fish species, if you have any, as some have specific substrate requirements.

[FinFan]

My gravel's on the smaller side, so that shouldn't be an issue. As for the fish, I've got a pleco that lives on the substrate, but I don't think it has any special requirements - if I'm wrong, please let me know! Thanks again for all the help, I really appreciate it.