Planted Tank Guru
Join Date: Apr 2011
Location: Hamilton, Ontario, Canada
I doubt you're going to get a carpet plant in a very deep tank without much light, CO2 or ferts. I think most carpet plants like a finer substrate too instead of pebbles, nothing for the substrate to hold nutrients for the root systems and runners, which is what most carpet plants are.
I'm trying dwarf hair grass in a 10gal, very shallow to yours by comparison, dual CFL lights over it, Netlea aquasoil, Excel, root tabs and micro fert dosing plus it's stocked with fish and I overfeed a bit to help make macro ferts and in a month, I have a couple of runners. At this rate, it will probably take 6 months to fill in as I'm probably just meeting the minimum requires for the DHG.
With pebbles with no ability to hold ferts, no co2, no ferts, what is going to be very low par in a deep tank, I think you are not going to get much of a carpet.
Maybe someone else has a suggest of a fast growing carpet plant that doesn't need small soil, CO2, ferts or light, but I think if a plant existed, everyone would recommend it everywhere. lol.
20g platy, , 2 x 10g shrimp, 3 x 20g shrimp, 7.5g shrimp and 1 great dane/mastiff puppy.
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My Tanks and my shrimps