hello Franky

Ok your on the right lines for getting off to a good start.I would not add any fish this weekend i would give it time for the filters to mature and build up some good bacteria.
your right that if you add a little food to the tank this will start the cycle going ,its the rotting food that produced a chemical called Amonia.In a few days the good bacteria in your filter will turn this Amonia into Nitrite.and then again given time another bacteria will move into your filter and turn this NITRITE into less harmfull NITRATE.(we remove the Nitrate through regular waterchanges)

Both Amonia and Nitrite are very harmfull to fish and these two shoud be 0 before you add fish!

To start with you will need 2 tests
Amonia & Nitrite.
it often works out cheaper to get the box of tests around £15 and this will do other tests ,Amonia,Nitrite,Nitrate,PH.

In a 35 litre tank you will only be keeping small fish. have you any thoughts on what your going to keep?
a good idea is to research and select fish that will live happy in your local water ( eg what comes straight out of the tap with only declorinater added)


Exciting times and great fun!

robert.

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