changing from 10 to 14000k will affect coral ?

[LIM CHYE HUAT]

1)currently using blv 10000k 150w bulb, thinking of changing to 14000k same

wattage other brand, any effect on the corals ,etc ?

2) how long before i need to change the mh bulb, yearly? , thanks a million.

[Achilles Tang]

Yes, you will get less PAR from a 14k bulb.

Light loving corals may be affected.

[LIM CHYE HUAT]

Yes, you will get less PAR from a 14k bulb.

Light loving corals may be affected.

finally someone to the rescue.

can i compensate by turning the mh on for longer hrs ? say 6.5 to 8 hrs?

[Kelmen]

I believe PAR mean the "penetration" into the water depth.

long hours probably don't help, you are likely need to shifting some stocks "upward".

I would suggest, if you statisfy with the tank been runned, don't chg the K.

Good things need time, bad\x-files things happened fast!

[ervine]

I believe PAR mean the "penetration" into the water depth.

long hours probably don't help, you are likely need to shifting some stocks "upward".

I would suggest, if you statisfy with the tank been runned, don't chg the K.

Good things need time, bad\x-files things happened fast!

i don think PAR = penetration dude.. PAR is some photosynthesis ratio thingy.. (correct me if I'm wrong).. more to do with the colour temperature than penetration.. or maybe both at the same time..

[Achilles Tang]

What PAR stands for

[Kelmen]

i don think PAR = penetration dude.. PAR is some photosynthesis ratio thingy.. (correct me if I'm wrong).. more to do with the colour temperature than penetration.. or maybe both at the same time..

eh, my bad

Photosynthetically active radiation, lighting quantity