Looking for advice on lowering ammonia in my 30 Gal tank with one Clownfish. Two months ago I tried a fishless cycle with live rock. All my levels were low, ammonia was at zero and nitrate levels were there, but not high. I thought it was cycled and added the clownfish. A month later ammonia spiked to toxic levels and I was told to use Dr. Tim's continue the cycle that was never completed and it was causing the spiked ammonia. I shut off all the filters and let it sit for 48 hours. The ammonia hasn't lowered at all and nitrate levels seem to be really low as if the bacteria is low.