how to make it grow bushy and like a lawn

[kribensis keeper]

my brother brought some hairgrass for his tropical tank and he wanted me to ask you guys how to make it grow fast, bushy and how to grow it like a carpet

 

[Nutter]

Bright light, co2 & a fine nutrient rich substrate like Eco-Complete or Flourite are the key. Regular use of substrate fertilizers wil also be of great benefit. Bright lights, co2 & plenty of nutrients will get it growing well & a fine substrate material will ensure it spreads into a dense carpet.

 

[josh11551]

what size tank and how many watts is the lighting at?