mushroom gets pale

[tetratetra]

dear all,

i've kept my mushroom for about 6 months but recently some started to get pale. What happened? (Because of this, I've replaced the bulbs already. I use 3 T5HO lamps for my 2.5 ft tank.)

many thanks

 

[SuperNerd]

Maybe we can start from the bottom and work our way up.

Exactly what are your water parameters?