After fishless cycling for almost 3 weeks we finally have Nitrites but very little Nitrates. Can we introduce our fish yet? My grow beds have been planted with seeds and are doing great and we have active plant growth. My water is pH 7.4, ammonia 2 ,nitrite .50 Nitrate .5. Temp 78
Start with something like a teaspoon or two and take a reading... you will quickly find how much does what. When you have fish you will want to raise the PH slowly. If you do it to fast you can suddenly change the chemistry of the water and the fish will not like it.