High Ph ?

[CarloUK]

One thing which i have been thinking. If i keep doing large and frequent water changes wont it make the bacteria grow really slow as they will have no Amonia or Nitrite to feed on ?

 

[fluttermoth]

Your filter will still cycle with an amount of ammonia/nitrite that's too small to show up on our home test kits, and keeping the levels low is the only way to keep your fish safe.

 

[daizeUK]

 
Salt ?

I have the Nutrafin Cycle Bacteria in a bottle. This was added as the instructions when i first filled the tank a month ago. Shall I add some ?

Ive done this morning a 25% water change and all the fish look lively. They must be producing Amonia by breathing as ive hardly fed them. As the pet shop man told me i didnt feed for 48hours then i fed lightly.

 
The salt was referring to aquarium salt which can help lessen the harmful effects of nitrite on fish as TwoTankAmin explained.
 
Nutrafin Cycle is a bit dubious as to whether it has any beneficial effect.  Personally I wouldn't bother with it.  TwoTankAmin listed some of the better bacterial products, or introducing some mature media, so if you want to speed up your cycle they would be the best way to go.
 
Fish respire ammonia through their gills as a waste product as well as excreting so they will always produce ammonia.  Starving them will reduce the ammonia they produce but there's also an argument that it also makes them less resistant to the effects of ammonia.  If you are feeding lightly then that sounds fine.
 
Yes, water changes will make the bacteria grow more slowly but that's why it's better to cycle the tank before adding fish.  A fish-in cycle is slower and takes more effort.