BRS Kalkwasser Container Question

[Afrashz]

I ordered BRS 2 lbs Kalkwasser from Amazon(probably not my best call)…the package arrived and there was a little dusting on the outside of the container of kalk. I opened the container and noticed there was no foil seal or anything on the container. Is this normal? I was expecting to see some form of seal underneath the lid.

 

[Afrashz]

Sorry to bother with such a petty question just wanted to inquire as would hate to use a product that could have been tampered with.

 

[dangles]

I wouldn’t be worried about it personally. Just my two cents.

 

[ryshark]

Mine arrived the same way. I’ve been using it with no issues.

 

[Marco_99]

I ordered BRS 2 lbs Kalkwasser from Amazon(probably not my best call)…the package arrived and there was a little dusting on the outside of the container of kalk. I opened the container and noticed there was no foil seal or anything on the container. Is this normal? I was expecting to see some form of seal underneath the lid.

There is nothing under the lid from me buying directly from BRS

 

[Afrashz]

Thanks all!

 

[Fish Fan]

I'm pretty sure the Calcium Hydroxide powder is very stable (it is fairly insoluble in water (thus the need for Kalk stirrers, etc.)). The solution (Kalkwasser) would do best to be kept air tight, but I believe the powder is like bomb-shelter material; good for years

@Miami Reef would know for sure

 

[Miami Reef]

The powder is subject to degradation from CO2. It is far from stable.

Hydroxide will decompose to carbonate, which will then react with calcium to precipitate calcium carbonate.

I don’t like kalk stirrers.

I don’t think the kalk has significantly degraded. I’m sure there’s some conductivity test to determine the potency. I’d just add enough powder to ensure the reservoir is completely saturated by ensuring there are solids on the bottom that don’t dissolve.

The remaining solids will redissolve when you add more water, unless if they are calcium carbonate.

 

[Fish Fan]

The powder is subject to degradation from CO2. It is far from stable.

Hydroxide will decompose to carbonate, which will then react with calcium to precipitate calcium carbonate.

I don’t like kalk stirrers.

I don’t think the kalk has significantly degraded. I’m sure there’s some conductivity test to determine the potency. I’d just add enough powder to ensure the reservoir is completely saturated. The remaining solids will redissolve when you add more water, unless if they are calcium carbonate.

Wow! Thank you for your reply here, I had no idea! I sincerely thought the powder itself was very shelf stable. I have always tried to keep the solution air-tight, back when I used Kalwasser (I am now considering it on my most recent tank).

Thank you for your fast reply, and for correcting me - glad I asked

 

[Fish Fan]

I have some BRS Kalk in storage that I ordered in about 2009.... Maybe I should buy new stuff

Thanks again, @Miami Reef!

 

[Miami Reef]

I have always tried to keep the solution air-tight, back when I used Kalwasser (I am now considering it on my most recent tank).

This is good practice. I think the crust naturally formed on top will do a good job protecting CO2 from entering, but Randy says the top should ideally be covered as well.

Eh, we can agree to disagree on that. But it’s just semantics at this point. lol

 

[Fish Fan]

This is good practice. I think the crust naturally formed on top will do a good job protecting CO2 from entering, but Randy says the top should ideally be covered as well.

Eh, we can agree to disagree on that. But it’s just semantics at this point. lol

Again, thank you for your help here! I guess I knew it reacted with CO2, I should have thought that through (more CO2 in air than in water, grrrrr) ... Glad I asked Thanks again!

 

[Miami Reef]

Again, thank you for your help here! I guess I knew it reacted with CO2, I should have thought that through ... Glad I asked Thanks again!

Of course!