I have a penguin 100 on my 10 gallon tank - I'll vouch for biowheel filters giving crystal clear water.
I keep it planted, though, and have driftwood which keeps the water very soft. That helps because it keeps minerals from precipitating out of solution and clouding the water.
I keep it planted, though, and have driftwood which keeps the water very soft. That helps because it keeps minerals from precipitating out of solution and clouding the water.
