I began my fishless cycle around the last week of Jan. Then someone gave my son a goldfish on Feb 26, so I have been doing 50% water changes daily. I tested the water Sat, and it was .25ppm ammonia, 5.0 Nitrate, and .25 nitrite. Now, I am at 0ppm ammonia, 0 nitrite, and still 5 Nitrate. I did a 50% water change on Friday night, 50% Saturday night, then about 20% last night. How can I get the Nitrate down, and do I still need to be doing any water changes. This is just a 5 gallon tank. Also, I will soon be getting a 55 gallon tank, and will do a fishless cycle on it. Can I take anything from this tank to speed the process up any?