What is the most commonly used additive?
The additive I use most regularly is Kalkwasser aka:calcium hydroxide this is mixed and added for evaporation (makeup water) usually weekly. The only other two products are iodine and strontium, added bi-weekly in between waterchanges. IMO, using a high quality salt mix i.e.: coralife mixed with purified tap water will replace the complex needed trace elements. Water changes done on a regular basis either 2 3 or 4 week intervals are important. The more frequent WC and maintenance schedule (vacuuming the live rock)will usually result in optimum conditions for the rock and live stock. Some reefkeepers will try and by-pass the water changes by simply adding a wide range of trace elements. I doubt if this can be done with any certainty. Calcium Hydroxide What does pickling lime do for the reef tank? Pickling lime is food grade calcium hydroxide. What it does is elevate pH and maintain calcium. Balls Pickle Lime After checking all the stores in my area… Super Kmart, Super SandS, Big Y, et