Hi Simonmac2,
Its been processing ammonia from about day 14 of cycling. It can depend tho. My last tank (60l) cycled in 6 weeks).
I were adding ammonia every 12 hours on my cycle and found out from Miss Wiggle that you should add ammonia every 24 hours. If i had been doing it correctly then my tank could have been cycled sooner but you cannot predict a cycle.
I'm pleased now that my tank is cycled. i will give my tank until wednesday (continue adding ammonia at night until i get half day off work to do a large water change to get the nitrates down then off to the pet shop to get some fish). I've asked my manager for half day wednesday (I'm currently running the IT Helpdesk until a manager is hired). I cannot see any problem (having half day).
I will post some pics once fishes are in their home.
Martyn