Help!! Hair grass turn brown!!!

[planter]

hi bros, any one here know the reason why will hair grass turn brown?? it use to br very green and recently it starts to turn brown and die off... pls help.

[bclee]

Please provide a little more information like: light, fertilisers, substrate, age, etc.

BC

[planter]

Tank Size: 4x2x2
Filter: 2026 & 2228
Base fert: JBL

Light: 2 x 36watt PL, 4 x 55watt PL & 1 x 40watt FL.
CO2 : Pressure Tank

PH: 6.8
KH: 4

Temp 26-28

Liquid fert: DR Marlick

[bclee]

You have quite high lighting. It might be you are short on NO3.

Please let me know which Dr Mallick fert you are using. What is the dosage and frequency of dosing?

BC

[planter]

Just to update.. the hairgrass problem has been solve... its due to Co2..
I inject too low for Co2 that causes the hair glass to turn brown... The following is what I do...for reference only..

* Cut/trim off the affected hair glass. (what has turned brown can't turn green again)

* I increase the Co2 level (KH 4, PH 6.

* All I do next is wait.... heehee and it turn out fine...