[bsmith]

I have it growing in a low light shrimp tank with no ferts and it grows fine. There is ADA AS in this tank though. I also have it growing in a high light nano with co2 and fert dosing. It grows much quicker in this tank. It also has AS in it.

General rule of thumb. Plants grow faster with more of their requred perameters i.e. light, ferts, co2...