I am currently cycling a 36 gallon tank to grow out juvenile Discus. I purchased a generic brand ammonia . To raise the ammonia level to 2 ppm I added 100 drops from a 5ml syringe The tank temp is set at 80-81* DIY sponge filter with 5 1" sponges ( 1 sponge was from display tank already seeded with bacteria) Ammonia levels Day 1-3 , 5 and 7 : 100 drops ammonia added to maintain 2 ppm. Reading prior to adding NH3 Was 1ppm Day 8-11 no NH3 was added. Reading was decreasing from 1.5 - .5 ppm Day 12 & 14. 20 drops NH3 added. NH3: .25ppm Nitrite Levels Day 3. < 0.25ppm Day 4-7 0.25 ppm Day 8-12. Steady increase to <5.0 but > 2.0. Those color charts tough to judge Day 13-14 ~5.0ppm Nitrates Tested day 13 read 20ppm. ( tap water is 5 ppm) Current plan is to keep NH3 between 0.25 - 0.50ppm and not allow nitrites to spike above 5ppm. The source I'm using states if nitrite goes above 5ppm will become toxic to bacteria. Once NH3 and nitrites reach 0 ppm then I will add 100 drops ammonia and look for both to reduce to 0 in 24 hrs 3 consecutive times for the tank to be fish ready. Then big WC to rid nitrates.