Hi all not been on in a while. Last time I was on I had a small plastic tank with no heater on lights
Now I have upgraded to a aqua one UFO 550. I have it all up an running an I've had my water tested an all is fine. So I now have 6 guppies.
The question is how long should I leave my lamp on ?
Thank for advise.

The question is how long should I leave my lamp on ?
Thank for advise.