I've been cycling my new 10 gallon tank for about a month, i have been using Dr.Tims one and only and doing 10-20% water changes about every other week. i cannot seem to get the ammonia down its been constantly at 8ppm i am running Live rock and a HOB Fluval Aquaclear 50 aquarium power filter with biomax ceramic rings and carbon. is there any way to lower ammonia without disrupting the cycle. Thanks in advance.