Old ballast = Algae Problem?

waverz

Slave to the reef!
I have a 50 gallon rubbermade that i use for coral propagation. For the past 5 months or so i have been having hair algae issues. I have tried bumping up flow by adding to HK 4's, a phosban reactor and even added a Warner Marine skimmer but the algae continues to grow. I am beginning to wonder if the lighting is the problem. I am running a 250 watt XM 10k SE on a very old ballast. I checked the bulb the other day and noticed a black ring around the glass toward the screw in part. I am wondering if this old ballast has caused kelvins to drop therefore growing algae rather than coral?? My corals have been looking like crap as of lately as well.

The only other thing is can think of is my CO2 reactor. Being the effluent drips into the 100 gallon rubbermade refugium directly below the 50 gallon prop tank, I wonder if there is excess Co2 feeding the algae. Maybe i should experiment with that by moving the drip somewhere else in the system, like somewhere that doesn't get as much light.

What do you guys think?
 
Re: Old ballast = Algae Problem?

<a href=showthread.php?s=&postid=14799614#post14799614 target=_blank>Originally posted</a> by waverz


The only other thing is can think of is my CO2 reactor. Being the effluent drips into the 100 gallon rubbermade refugium directly below the 50 gallon prop tank, I wonder if there is excess Co2 feeding the algae. Maybe i should experiment with that by moving the drip somewhere else in the system, like somewhere that doesn't get as much light.

What do you guys think?

I'd have a hard time believing it was the ballast. Maybe the bulb.


Calcium reactor effluent tends to be pretty high in phosphate. If its dripping into the tub, then the algae is getting it before it gets to the phosphate reactor.
 
i have a xm 10k and 6months later im getting algae to...first things i would ask are A) are you using RO/DI water? and B) prob not the ballast i would venture at the bulb
 
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