Pale chaeto

[andylee]

The chaeto in my sump is turning very pale. I recently upgraded to a PAR 38 bulb from a power compact. Is too much light the problem? At roughly the same time, I started using a Phosban reactor. Is it possible that that's sucking up all the phospate and the algae is blanching from that?

I suspect the light, because the center of the ball of chaeto is still pretty dark green.

Anyone else see this before?

 

[mbg75]

Mine was doin that with the light on 24/7. Better now that I shut it a few hours a day.

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[guarda]

Same here. Did the reverse daylight cycle and it looks fine now.

 

[andylee]

I've cut back from like 18 hours a day to 8 to see what happens.

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[ming]

If the chaeto is just light green, its just because its new growth. People that have a ball of chaeto that is all dark green, usually its because their chaeto grows very slow.

 

[pwreef]

IMHO wrong spectrum. Your par bulb probably has royal blue which makes the overall color closer to 10K. I moved cheato from my DT to the fuge and I was that light, almost transparent color that it turned under my LEDs. Now it's dark green under a 5K daylight bulb in the fuge. I am thinking o switching to LEDs down there but I would use no RB. Only neutral white.