better growth help

[Fishman0]

I currently have three clusters of giant hairgrass (Eleocharis montevidensis) in my 75gal. it has recently began to brown slightly on some of the shafts.

I have just treated the water with the suggested dose of Nurtafin Plant Gro of 5mL/10gal, which provides 0.3mg/L iron concentration.

Water params; pH=7.6, Ammonia=0, Nitrite=0, Nitrate=<20, temp=82F
Substrate= 1"-1.5" sand bedding

Lighting is on for 8.5hrs/day with two 48", 40W AquaGlo T8 bulbs

What else can I do to ensure good growth?

 

[Tropicalfishking]

You could consider root tabs... but that is just my 2 cents. Someone with more Experiance should chime in.

 

[~ocean]

I guess some body else than me should say something, because I only have corcksrew plants, and they're perfect.