Green hair algae problem

[brad.s1989]

Hi guys,
I am new to the marine world, I have purchased a river reef 94l aquarium, which has now been set up for 3months.
Everything seemed to be going well until recently, when a green hair-like algae has appeared on the live rock, and in areas on the tank.
I feed the tank once daily, with frozen brine shrimp.
The integrated lighting has settings of day and night, the lights are left on throughout the day, and a blue uv light for the evenings.
I do weekly 20% water changes, and the tank currently only contains a cleaner shrimp, a royal grammar and a blue sponge coral. (along with 9kg of live rock).

Does anybody have any advice on what I can do to tackle the problem?

Thanks!

 

[tonedogz]

right off the bat I'd say your lights are on to long also you could try cutting down on the feedings to every other day

 

[brad.s1989]

Thanks for the advice, how long do u recommend I should put the lights on for? Also how would you go about removing the algae from the rocks?

 

[AquaRick]

What kind of light is this? By blue UV light, do you mean actinic lights, or a blue led moonlight? If it's the blue actinic lighting, that needs to stay off at night. Lights should be on for 7-8 hours a day. Also, tone down your feedings to every other day or every three days.

 

[tonedogz]

I'd say 8 to 10 should be plenty. As for the rock you could try suctioning it off when you do water changes or if its not a pain I use to mix a bucket of saltwater and scrub them off with a brush in the water

 

[brad.s1989]

It's the blue led lights. I'll try leaving the lights off a few hours a day and see what happens.

I'll give it a go next time I do the water change, but I may have to hand scrub each of them.

Thanks for all your help.

 

[melosu58]

FantasyReef Databases-Viewing item "10 Step Plan for Nuisance Algae Control"

This is an excellent checklist.