I have fluval spec v 5g and I thought the cycle was going ok. As of now the ammonia at 0. Nitrite about 10. Nitrate about 60. Ph is around 7. (Sand substrate with plants dragon stone ) did 40% wc yesterday with prime and another dose of fritz fishless fuel (5 drops) and fritz zyme 7 (less than 1/4 cup) don't know if I need to wait more for nitrites to go down and do nothing or continue with water changes. I know it takes longer for them to go down. I do have algae now for the past few days. On the sand plants rocks and the water a bit green. Also starting to see a lil hair algae. I'm working on decreasing the amount of light. I do notice growth on my plants tho.