Just watched a BRS video explaining problems with traditional two part dosing and the balling method.
Will my regular water changes not help replenish trace elements? Currently dosing soda ash for alkalinity since that is the only thing being depleted. If not, can I do Tropic Marine All For Reef? Wouldn’t that mean my calcium and mag levels would increase unnecessarily?
I do not watch BRS videos, but I can details exactly what the two different issues are here.
1. When you dose calcium chloride and sodium bicarbonate/carbonate/hydroxide for calcium and alk, there is a residue of sodium and chloride that accumulates. That slowly raises salintiy, and when a reefer maintains salinity by rwducing it a bit, everything in the water gets pushed down. That includes major ions such as potassium and sulfate, minor ions like fluoride, and trace elements such as iron and manganese.
There are several possible ways to deal with that decline.
A. Put all of those other ions into one of the two parts. Products like ESV B-ionic do that.
B. Put all of those ions into a third part. Products like Balling Part C do that.
C. Put some of the most important (but not all) of those ions into a third part . My third part does that for magnesium and sulfate.
D. Rely on water changes to keep elements from drifting too much from this effect. It works, but is not as effective as A-C.
2. The second issue is how to replace elements lost to consumption that is unrelated to the use of the two part, and is driven by other processes, such as precipitation, element uptake by organisms, removal by media or skimmers, etc.
Again, there are several ways to deal with that decline:
A. Put some of those depleted ions into the into one of the two parts of a two part. A variety of commercial two parts make this claim (not ESV).
B. Put some of those depleted ions a third part. Products like AF mineral salt may claim to do this. Balling Part C does not.
C. Put some of the most important (but not all) of those ions into a third part . My third part does that for real depletion of magnesium.
D. Rely on food additions and water changes to keep elements from drifting too much from this effect. It works, but is not as chemically complete as A-C or E below.
E. Dose one or more element supplements to replace what is consumed. Note that the recipe for 2E must be very different than the recipe for issues relating to part 1.