Interesting Youtube Video

[techen]

 
Apart from where they say change the water once a month, I think it has some good tips and is well worth having a watch

 

[eaglesaquarium]

Well, the statement too about the beneficial bacteria living in the water is ALSO wrong, which they mentioned not once, but TWICE!
 
I also wouldn't have allowed the fish to "flush" the toilet.  Providing the visual/mental image of the poo just sitting in the toilet, unflushed, would have been more convincing, IMHO.
 
 
Leave the light on for 8-10 hours a day is bad advice as well, unless its a planted tank.  Fish don't need 'lights' on the tank, ambient room lighting is sufficient.  8-10 hours a day with no plants is just asking for algae to grow.

 

[techen]

In the youtube comments people have already said things like these and have explained to someone starting the hobby with no idea with what there doing this video is an aid to get people sorted.
 
I've seen people emptying there tank and cleaning everything then doing a 100% waterchange. Also seen people without filters, The way I see it. If you have no filter, 25% of water a month would mean that the good bacteria could survive and aid the cycle process more.