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That sounds right. Limestone or calcium carbonate has carbonates which do not dissolve in water. Those sand particles are most likely the carbonates. If they get in the tank it will dissolve very slowly, but no harm done.

I have mixed the neo minerals Its different from calcium sulfate And the residues of lime is lesser than the calcium sulfate but the residues that remains in lime is like a sand

Yes, or limestone.

Calcium carbonate is lime right?

Yes, Magnesium sulphate is commonly known as Epsom Salt. And yes it looks crystallised, like sugar. Calcium sulphate Dihydrate and Potassium sulphate, both just look like white powder. You won't be able to tell the difference in calcium sulphate just by the looks. Pictures here, if you want a look ... https://www.kegking.com.au/beer-brewing-ingredients/adjuncts.html?p=2

That's right. CO2 will dissolve CaCO3. Anything below 7.0pH will start to dissolve it. The lower the pH the more/faster it dissolves.

Oops, I had a recall error. My bad. @jaycsaid temp should be ~5c, not 20c

Oops my bad, I meant Caridina. But thank you, really appreciate the help.

Can you send pic whats lookw like the Calcium sulphate magnesium sulphate potassium sulphate and trace elements? So that i know the difference thanks

Cold or hot water not working Sensei is the magnesium sulphate is epsom salt? And its look like crystalized?

Those are some gorgeous shrimp. Try watching this video, https://www.youtube.com/watch?v=i2wVMDjh1Bg By the way, they are Caridina, not neocaridina shrimp. From having a look around I think the 'fishbone' is more about the well defined fishbone pattern down the back (higher quality ones not having any other marking/pattern on the body), but the boa variant has a less precise wishbone down the back and also has more spots/blotches all over. Your pictures appear to be boa! Pricewise they should be similar, though as you say, not cheap.

Hi, I'm fairly new to shrimp keeping but I am a seasoned fish keeper. I’ve been thinking of breeding shrimps for a while and have found interest in red galaxy fishbone boas. I have found a seller and he has sent me photos (please see them attached). I am still struggling to grasp the differences between what makes a shrimp a boa and not just a regular galaxy fishbone and so I was hoping to get some insight as to what I may be getting. As you probably know, these are not cheap shrimp and I’d just like to make sure I’m getting what I pay for. Thank you :).

@jayc I read a tutorial about dissolving CaCO3 in vinegar. Im not going to do that, but it was interesting to learn. That combined with an earlier convo in this thread, where a poster added an acid before the CaCO3, leads me to the conclusion that pH dissolves the CaCO3. CO2 lowers pH, right? If correct, do you know the pH level that dissolves caco3? I also read your comment about dissolution temp @ ~20c. I think I can achieve that easily. I'm not doing a tropical tank. I ordered ingredients yesterday. 😁 CaSO4.2H2O MgSO4.7H2O, K2CO3, & CaCO3.

Calcium Sulphate dissolves better in colder water. It's worse in hot water. I don't think you have the right Calcium Sulphate. Not all Calcium Sulphate is the same. There is Dihydrate (Ca2SO4 +2H2O) and Anhydrite (Ca2SO4) Calcium Sulphate. The addition of the 2 naturally occurring water molecules in Calcium Sulphate Dihydrate make this type of Calcium Sulphate more water soluble, and therefore, it will work that much faster when applied. Not all calcium is soluble. Calcium Carbonate – Limestone -, for example, is not soluble. Make sure you have Calcium Sulphate Dihydrate. Calcium Sulphate Dihydrate can be known as Gypsum by it's common name.

Hi @DeepWaterCulture, the solubility product of CaCO3 is very low at 3.3 * 10^-9 indicating that this compound is not soluble in water. Calcium carbonate molecules are more easily soluble in rainwater, but still no where near other forms of Calcium like Calcium Sulphate Dihyrate or Calcium Chloride for example. It is due to the presence of dissolved carbon dioxide in rainwater which causes the formation of carbonic acid that helps in dissolving CaCO3. Lower temps also help, so cold water helps dissolve CaCO3. That is probably why a lot of other sources say to use CO2. Why don't you try looking for Calcium Sulfate Dihydrate (CaSO₄·2H₂O) instead? Not all Calcium Sulfate is the same. There is Dihydrate (Ca2SO4 +2H2O) and Anhydrite (Ca2SO4) Calcium Sulfate. The addition of the 2 naturally occurring water molecules in Calcium Sulfate Dihydrate make this type of Calcium Sulfate more water soluble, and therefore, it will work that much faster when applied.

Thats right. I will do that later will update if its good or not

I don't see it as making any difference, but I am no chemist. Worth a try to just see if it actually dissolves better first and then go from there, it may not make any difference and still not dissolve in which case you will know there is no point using hot water and we need to keep looking for a better solution?

its not affect the nutrients of the calcium if i use hot water?

It can't hurt to try with some hot water from a kettle, it may help and you then just let it cool. You may need to keep shaking it vidorously every few minutes as it cools also! I haven't actually had to disolve Calcium, but I have heard it is a difficult thing to achieve from other posts on here I have come across!

I also try it i put the mix in a 2liters of coke bottle until now im shaking so hard after 2 days there still a powder

It can't hurt to try it in hot water. Try it in a tightly sealed container so you can really vigorously shake it for couple of minutes, let it cool and shake it vigorously again?

Yes I am from Melbourne Australia. Was just hoping someone might see the comment.

Welcome, This is quite an old post and seems to be mainly posts frm Australia! Are you from Australia also? Hopefully someone can help you locate what you want, but they will need to know which country you are based in, as not ALL snails are available in ALL countries'

I have been looking for Singapore spiral snails for ages. Can you please tell me where you got them from?

Hi sensei its still not desolve in cold water. Can i use hot water?