Do the light's in the tank need to be on in the day time. Tank is sitting on the side of the living room window, but never gets direct sun light, there are no live plants only fake.
Also I've read about not changing the filter unless it is falling apart. Should it be cleaned every couple of weeks, or only when the water flow is low and or it is coated with algae etc.
I clean the glass and fake plants every 2 weeks.
I have guppies, neon tetra and a couple of Zebra Danio. Mostly guppies. I have a 20 gal
tank, aerator. 20 gal
tetra water filter. Do a 20% water change every week. Add Nutrafin Aqua Plus, Cycle, Waste control.