First of all,.. i hope that if you decide to quit you give the "live" rock away or back to the LFS
. There is TONS of life on each one of those and it's sad to hear that it was treated that way. I don't know how much decomp is on the rock and if your really serious about long term saltwater than I would suggest PWC
once a week checking nitrites and nitrates in between. Keep your eye on salinity and temperature before you place new water in the tank. An R/O unit is great - tap water doesn't work good at all in saltwater. Good lighting and water changes will be key. Other than that as far as cycling is all I can give you for now. Patience and time will allow it to turn over. 30g should take two weeks or so but keep checking nitrite / nitrate and PH levels to insure the damsels are not stressed.