Review on Seachem Acid Regulator - 250g for Optimal pH Control by Angel Harris

There are two steps to using this product: initial pH lowering and pH maintenance. The initial pH drop is a big problem, but you only have to do it once. The pH of the water is maintained by chemical buffers that keep the pH stable over time. The initial descent is difficult as you have to "beat off" the alkaline buffers in the water. Because of the buffering effect, you may not have any noticeable changes for a long time, and suddenly the pH value will start to change rapidly. It's like starting an aquarium for the first time and wondering if the ammonia levels will EVER go down. Maintaining the pH is much easier. If you're using a bucket for a water change, you can fill it with water as you normally would and see what combination of acidic and neutral regulators gives you the pH level you want. You then use this when filling the water change bucket! Another nice feature of this acidity regulator is that it softens the water. Please note, however, that the air stone acts as a protein skimmer when there is aeration in your aquarium. When air bubbles burst on the water surface, a small amount of sediment is thrown out. Over time, this sediment can accumulate, causing the top of the aquarium to crust. It washes off easily but can make you dizzy at first!