is this possible?

[jerl77]

i done my mh upgrade about 1 month ago.went for t5 to 2 250 watt mh now i am seeing my coarline dieing.my water is the same when i have the t5 and it was growing like weeds.is this normal for mh lights?
cal 450 ppm
alk 10
mag 1350
nit 0
amo 0

 

[Deanos]

Different species of coraline require different lighting parameters.

 

[jerl77]

so this is normal? i will lose some and get diff back.

 

[meschaefer]

so this is normal? i will lose some and get diff back.

Yes, you will lose some and get different species back.

Not only that, but coralline tends to do better in dimmer tanks. You will find that it grows fastest in areas of the tank that are lower or not in direct light, such as the bottom corners of the tank.