For major, minor and trace element management, I put Balling light from Fauna Marin into the hat, in combination with Captiv8 products for further refinement (if needed).
I am suprised folks are able to run tanks successfully long term with all in one products such as All for Reef or Ready for Reef (the competing Fauna Marin product), but it is all about experience I guess. I found it harder, and potentially more expensive (except for the AFR powder version, but still) to use these seemingly easier products to achieve the level of precision specifically for major elements such has Alk and CA (and MAG).
Balling light is a three-part solution where major, minor, and trace elements are added in a very simple way to Alk and CA solutions separately to keep them in balance. This gives more control over them than vs e.g. ESV in my opinion where they are pre-added. Both Fauna M and ESV keep these formulas in secret, and both seem to constantly update them, which makes them very similar in this aspect. If I did not know about Balling light, I would probably use ESV.
I thought I put out my personal comparison between the following dosing options for further discussion on pros and cons:
- All in one solutions: All for reef / ready for reef.
- Two or three part solutions: ESV, Balling, Balling light, ATI etc.
- Kalkwasser: typically non-branded
- Individual: e.g., Captiv8, others
Cost: I like the cost-benefit aspect of Balling light compared to ESV, as it should run cheaper in the end once dialed in. However, you should (but do not have to) run ICP in the beginning to maximize the benefits which will add to the cost early on, and gets into the whole ICP value etc discussion. Kalkwasser is still the cheapest option for Alk and CA, but you would still need another product for magnesium (potentially only water change), and minor and trace elements (if not only rely on water change). Captiv8 products are a great supplement for Kalkwasser. Their ISOL MT is super cheap but misses (intentionally) certain elements such e.g. Strontium and Flouride. Still the cheapest option is to run Kalkwasser with Captiv8 (or just water change).
Level of precision: The Captiv8 products combined with ICP and their master dosing calculator which Chris Woods completes for you after receiving the ICP results is in my opinion the most effective and precise way to dial in elements (unless the ICP is too far off, but well, everything is off to some extent anyway). There is also a cost savings aspect if you were to truly only rely on Captiv8 products, but this is being offset by the need to run ICP regularly. Balling light is less precise than a Captiv8 focused approach unless used with ICP and supplemented further. But it does give a nice baseline if Alk and CA is measured correctly manually, and if you consider Fauna Marin’s target value for elements appropriate. It is important to note that Captiv8 focuses on seawater parameters while Fauna Marin (and others) use their own experience (from e,g, Coral Farms in Germany and UK) and deviate on some/several target values from seawater.
Easy of use: All in one are winning this clearly which is why they are so popular. To only need one dosing head or to be able to manually dose easily is great. Balling light needs up to three dosers, but I believe you only need two and only manually dose magnesium if needed. Kalk only needs one doser too, but I added another doser for the Captiv8 master dosing solution when I used Kalk previously. But you can also just add their ISOL MT manually daily with a drop or more. ESV would need two dosers and I did feel this product is more concentrated and feels less clean when kept in a vessel than e.g. Captiv8 products or Balling light.
Risk of failure: Kalkwasser was used in the 80s in Germany until folks seemed to have issues with it longer term while having good results short term. This resulted in the precipitation concern theory of Kalkwasser, when not used in a Kalkreactor, and this led to the development of the original alternative Balling dosing method (by Hans Werner Balling, still a current Tropic Marin employee based in Germany) in the 1990s. From what I know, Claude Schumacher, CEO Fauna Marin, agreed with the Balling method in principle but thought there was a better way/customer friendly way to use the Balling method and developed Balling light approx. 20 years ago. This at the time led to similar backlash as his current claims around the BOLUS method, but he seems to currently lead market share in Europe on element management systems with balling light. I do not consider any of the current approaches risky in itself (short term at least), but the Captiv8 approach requires more ‘thinking’ in my opinion, and therefore a higher risk of incorrrect dosing if miscalculated. Two part/ESV seems easy to dose if Alk and CA is measured correctly, and the same applies to Balling light. Regarding All For Reef, I feel this seems the hardest to get right but maybe also hard to get fundementally wrong.
PH boost: I do not believe any of them provide a meaningful PH boost, while some boost PH more than others. Kalk pushes PH up and then it goes down a lot when not dosed anymore so dosing this at night appears to be most appropriate to keep PH relatively stable. In my case, CO2 impacted PH much (!) more than Kalk could ever do, and using a CO2 scrubber has been the best investment for this reason for me, without the need (and taking a risk on) for Kalkwasser. Balling light claims to boost PH in a natural way if applied in a BOLUS type all at once alkalinity method. Similar when Balling light was introduced 20 years ago, there has been a lot of controversy in favor of the traditional thinking of continous alkalinity dosing. It might turn out to be next vibrant disaster, or the go to choice for future element dosing. We will see. I have been using the BOLUS approach for a few weeks now and did not see a difference when used in connection with a CO2 scrubber, see chart below. Still, I am quite happy with my PH chart (FYI: the dip happens at 9 am every morning after alk is dosed in full, time is off due to time difference from my current location). However, the idea behind BOLUS is to not need aritifical PH boosting methods such as Kalk of CO2 scrubber, so I will try to unhook the CO2 scrubber in the next few weeks and see if this chart can stay relatively similar.
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