HULON;4022310; said:just curiuos how come nobody in this discusion has not talked about Uv sterilizers?Do they hurt the rays?
In my experience UV takes more work that what it actually gives you. It's very 'ray safe', but scrubbing the tank is easier.
You need to look at what feeds algae: Light, nitrate and phosphate.
To fight algae, fight what it needs to live.
They'd be eaten as soon as I dumped them into the tank. I heard koi eat algae?