Lime Blok??????

Has anyone seen this?

An effective natural aid which:
supplies needed calcium supplements
aids new growth of calcareous purple and pink algaes
supplies calcium to green algaes
aids to generate new shell material on clams, oysters and other hard shell animals
stops growth of hair algae without pesticides
permists coral to develop new layers of calcium carbonate
One disk will treat 50 net gallons of aquarium water. Add new disk one week after first disk is dissolved or nearly exhausted. Disk will dissolve slowly over a period of 1 week or sooner depending on water flow across the surface of the disk.
32 gms
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Sea Labs makes the best old cheap product I have ever used been around for 30 yrs its called Sea Labs Old # 28 replenishing blocks ,, They are for ca and slow release and they have a # 14 I think for pure safe buffering of carbonates .

 

I currently use the #28 blocks just bought some from fosters. I added some to my main tank and they dissolved in like 3 days guess my tank was hurting for it. redosed it and this time burried them in the sand for a longer lasting effect.

 

tangster do you think the lim bloks are something like the #28 that can be just dropped in?