Why is coraline algae growing more in my sump than display

[jeffrey750750]

I have coraline growing on my hydors and magfloat but not the glass of the display. My sump has it growing like weeds, it's even in the return hose

 

[mtfish]

Not sure but may be too much light. I have found that it actually grows better at the edges than under high intensity light.

 

[jeffrey750750]

my fuge light is on 18 hours a day

 

[JoshH]

What kind of inhabitants do you have in your tank?

 

[mtfish]

my fuge light is on 18 hours a day

I was thinking more of par than duration. Does your fuge light have as much par as the DT?

 

[jelazar]

Coralline algae grows better on plastic and acrylic than glass IME.

 

[jeffrey750750]

it's an amazon 150 watt led grow light. my light on the tank is a gen 4 radion xr15

 

[jeffrey750750]

What kind of inhabitants do you have in your tank?

probably too many, so dont yell at me. Vlamingi tang, sailfin tang, yellow damsel, green chromis, 2 gladiator clowns, 6 line wrasse, 2 lyrtail anthias, 3 pajama cardinals, watchman goby, diamond spot goby, fire shrimp, emerald crab, hermit crabs, 2 turbos snails, 5 or 7 star snails, couple other snails, 6 clams and corals

 

[jeffrey750750]

 

[mtfish]

Nice tank! That sailfin looks tiny

 

[SmallLebowski]

Is the fuge light a high red spectrum light? Just by anecdote, I believe coralline algae grows better with higher red spectrum light.

 

[jeffrey750750]

Is the fuge light a high red spectrum light? Just by anecdote, I believe coralline algae grows better with higher red spectrum light.

honestly i dont know, to the eye it looks between white and yellow. There is a cover over the bulbs. The coraline doesn't bother me at all but i would like to see it on my back glass