I agree with what people are saying here.
A lot of the products you are using are doing the same thing and doubling up on it's functionality.
Mosura denitro isn't doing anything more than what a healthy filter is doing, assuming you have sufficient filtration for the size of tank you have. If this truely works you wouldn't be seeing nitrates. I'm sceptical a powdered product is capable of turning nitrite and nitrates into "a harmless gaseous state of nitrogen".
Mosura rich water is just adding fulvic acid, nothing a cheaper bottle of blackwater won't do, or a few Indian Almond leaves in the tank won't do.
I'm convinced Old Sea mud is just Montmorillonite Powder with some other additives. You don't really think they dredge up old sea mud from the ocean for use in a freshwater tank do you?
All the other products have no description of what it contains. Which means we have no idea what it is doing to the water in the tank.
And that's the problem with using these big name products. Their ingredients are a closely guarded secret. But once you realise what it is, you will understand that there are cheaper alternatives.
You only have what the manufacturer's description of what it does, but have you questioned the description about what it REALLY does?
It seems like I'm picking on Mosura, I'm not. I like using some of their products.
Take Borneo Wild Vigor for example. It's description says - "You can observe that shrimps stop dying during unsuccessful moulting. Vigor also helps in boosting plant growth in a planted tank."
Really?? Yet you have shrimp dying, most likely from moulting issues if I was to take a guess. And how does it boost plant growth??
I'm not picking on Borneo Wild either. Again I use some of their products.
But not all at once.
You have a lot of food products. So with the exception of the food products, I would cut down of all the other additives to just one.
You mentioned using Salty Shrimp mineral. Does this mean you use RO water?
If you do, then that is all I would use. Salty Shrimp with RO water matched to the parameters in your tank and added slowly. This assumes your filter is well established and sufficient in terms of size to cater for your bioload.
Water changes at 10%, no more, to maintain water parameter consistency.
You can continue feeding using the foods you have.
The key is to keep the water parameters as stable as possible with as little fluctuation as possible.
The weekly addition of tonics in the regime above, whether you need it or not, is creating constant changes to the tank's parameters.
Adopt the K.I.S.S. principle. Keep It Shrimply Simple.
Good filtration and stable/constant water parameters suited to the shrimp you are keeping.
Use the processed foods, they are good for a staple (that means you feed it regularly when you are too lazy to make fresh foods).
But give your shrimp fresh foods occasionally ... leaves, flowers, fruits (we have a list in the Food & Nutrition section).
Give your shrimp protein ... frozen blood worms. They will get more nutrients out of blood worms than you can find in any processed foods.
Not only will KISS save you money, your shrimp will probably be better off for it.