I've looked at that thread and it seems like a good possibility that the cloudiness may be due to bacterial reaction. I don't know exactly which tank bacteria can directly metabolize gluconate as opposed to glucose. There is a difference in the metabolic pathways when comparing the two.
It could be innocuous but generally I'm not really a fan of supporting large bacterial colonies simply because they typically are aerobic and so take oxygen away from the fish and plants.
Also, I'm not really sure what the residue of this gluconate metabolism would be. Whatever it is, it should be gotten rid of, and this might suggest an endless water change loop (maybe). So if you are doing all this for shrimp there could be a downside. I might have missed it somewhere along the way and you may have rejected it for some reason, but CaCl is a great way to increase Ca without increasing the KH, and Mg, well, you don't really need much of this stuff for plants at all (maybe for shrimp again?). Mg just has to be non-zero, so a little bit of Epsom Salts is all you need from a plant perspective.
Plants accrue the micronutrients within the leaves and these metals never move from the leaf, so if the dosing is regular next week the leaves will have more of everything than they do this week. I'm also not sure what the aversion is to high SO4 either, unless it's another shrimp thing. It could be that you're overthinking the scheme. Unless the shrimp species is something out of the ordinary I don't think it's necessary to optimize the water's content to this level of precision.