when i cycled my 60l tank 2 years ago i used kleen off household ammonia and testing kits. It does take time weeks or more than a month. If you can get cycled media from a fish store then that would work wonders but if you cannot then just use the ammonia and some tests kits. I provided some link to follow. kleen off Ammonia has 10% strength .
1) First you need to know how many litres of water are in your tank. This is easy – measure the height, width and length in centimetres and multiply those figures together and then divide by 1000 (or use the calculator on the right). For example a tank measuring 100cm by 50cm by 30cm would hold 150 litres. If you have a lot of substrate and décor in your tank you need to take 10-20% off your calculated figure to allow for this.
2) Use the ammonia calculator at the bottom of the page to work out the amount of ammonia in millilitres (ml) to introduce and add it to the tank.
3) The following day use the ammonia test kit to measure the ammonia in the tank.If it’s below 3ppm (parts per million) use the ammonia calculator below to calculate how much ammonia to add to bring the level back to 3ppm. It may take several days before you see a significant drop.
4) Repeat step 3 every day. This process is to start the cycle off (the initial bacterial growth) and keep the bacteria alive by feeding them ammonia at the correct concentrations in the tank water.
5) After about a week you can start to test for nitrite in the water. Ammonia is converted to Nitrite in the first part of the cycle so when you can detect it, it means the cycle has started.
6) Continue testing for ammonia every day. Whenever it drops below 3ppm add enough ammonia to bring the level back up to 3ppm using the calculator to obtain the correct dose. Also test for nitrite every other day. You should see nitrite rise and then start falling after a few weeks.
7) Start testing for Nitrate after a few weeks. Nitrate is the last part of the process where the bacteria convert the nitrite to nitrate. When the test kit starts showing a fall in the nitrites you should see a rise in the nitrates.
http://www.fishforums.net/aquarium-calculator.htm
https://www.ebay.co.uk/itm/Kleen-Of...hash=item35c46e6184:m:md6R6rBSZaNmueoCkf9cSaA
http://spec-tanks.com/how-to-fishless-cycle-a-new-aquarium/