ID this PICs. Is it Algae

[7napoleon]

I have this terrible green in one of my tank after I feed my fish green earthworm and cover tank up to let arowana fish fit in for 2 days. It's not like common algae bloom I encounter in the past. It only visible after turned on aquarium light. And water looks crystal clear when lights is off. there is a pics. Is it algae? (I already have the UV sterilizers on both filter that serves the tank on for 20 hours now)

 

[Fat Homer]

Seems like whatever is making your earthworms green is leeching into the water...

Plus, if you are running a UV filter, i doubt green water could get so bad...


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[7napoleon]

So I just do some water change ?

 

[E.C.]

Maybe it's the green stuff from the green worm, algae wouldn't bloom that fast, what's more if it blooms even with the lights off you'll notice it right away.

 

[E.C.]

So I just do some water change ?

yep =)

 

[7napoleon]

Thanks