Strontium Dosing Rate Calculator

If your alkalinity and calcium are stable but you see low levels of strontium in your test results, you might be frustrated. Strontium is necessary for keep the crystal lattice structure of coral skeletons and coralline algae. When there isn’t sufficient strontium present, these structures will dulls in color and slow their growth rate.

Because the loss of strontium occurs over time, the lack of strontium can go unnoticed until it begins impacting your livestock. Corals continuously incorporate strontium into their structure. It’s an ongoing requirement. Yet many hobbyists view it as something of an occasional remedy instead. This is ineffective because your animals have been coping with poor conditions until you finally add something. It also takes away from regular maintenance and replaces it with guesses that is now labeled “emergency corrections.

How to Fix Low Strontium Levels

There’s a solution to this: use a calculator to determine how much you should dose according to your test results and tank volume. It will replace guesswork with a routine that you can repeat. Supplements are chemically weighed differently Some supplement sources are dry salts (e.g., strontium chloride hexahydrate), while others is liquid concentrates.

To dose correctly, you must account for the difference in molecular weights; otherwise, you will give too much or too little if you dose by total weight. Most folks think a gram of salt = a gram of active ingredient. Not typically. The tool handles those purity and source adjustments automaticly. You dose for actual elemental amount.

This eliminates sudden changes. These rapid jumps or drops causes stress on your livestock. More important than adding accurate amounts of strontium is when you add it. Adding too much too soon will shock the system or hide problems with poor flow. Best practice is to add a small amount each day until the deficit is corrected rather than all at one time.

Not only will this give your organism time to adjust but will allow you time to check that your test kits are accurate. A slower addition will also indicate if your water changes is sufficient to sustain the levels. If you’re chasing low strontium after dosing then maybe there’s a problem with biological load in the tank or your source water.

Because most salt mixes don’t include as much strontium as found in nature, levels change a lot with water changes. Eight parts per million is considered the ideal range but you might be hard-pressed to achieve that through water changes alone. Your tank’s strontium level is also affected by biological uptake and evaporation. That’s why the calculator takes into account the amount of strontium added with each water change. When you supplement accordingly, it compensates for any deficiency while preventing overcorrection. It mimics real-world conditions where replacing water balances out evaporation, biological uptake, etc.

Think of it as a dynamic system, not a static one that you manage. Don’t freak out if you see a number go down, Strontium is easily adjusted consistantly. You’re not looking for perfect in one day but stable for a week or two. Setting initial changes versus continued maintenance provides a buffer that allows strontium to level off after a spike or error in test. A step by step approach is more protective of your corals than any bandaid fix.

Just as alkalinity requires calcium, strontium also requires consistency to work best. Provide steady levels, check growth, and let the chemistry do its job while you just sit back and enjoy.