Blasting Grit Sand (black color) contains copper?
I have been using it for a week now, and I think my shrimps are dying because of it. I think there may be copper leeching out of the sand. Is it possible for blasting grit to contain such element? I have not done much research lol Just looking for a quick answer... Unfortunately I am losing 5 shrimps a day, and it is shamefully ongoing... I thought it was because of the stress of separating them while I was converting their substrate.. I don't think so... but I did not drip-acclimate them (but what is the point if the water pH, kH, gH and the temperature is the same?) I just poured them in.. So anyway, they eat like normal shrimps do, but the sudden deaths are driving my crazy. I am giving them the best Reverse Osmosis soft water that is given back important electrolytes, so the acidity of ther water remains the same when I swapped out ADA AS2 for blasting grit and cold temps available.. The reason I had to use sand grit was because ADA Amazonia 2 was beginning to turn into serious mush like dirt; so I had a plan to cap it with something new, blasting black grit... Before, things were fine with Amazonia 2, but shortly after, the shrimps was digging and looking for detritus, and it generated clouds upon clouds of Amazonia 2 dust, which tells me its probably because of the age of the soil, which is about 3 years old now. It is finally starting to seriously break down...
Do you guys think it is the sand grit containing copper? I am seriously thinking about buying a copper test kit by API to check and see if there are high levels of it. Also, I might consider taking out the sand for a different type that is shrimp-safe (which brand is good in your experience?) if the blasting grit is no good.
Any thoughts or help would greatly be appreciated.
Thanks for reading guys,
20 gallon - Red Cherry Shrimp/Marbled crayfish tank
55 gallon - Dutch scape low-tech planted tank
250 gallon - Red hook silver dollar/Silver dollars/PB Jack Dempsey/Clown loaches/Tinfoil barb/Roseline sharks/Bala shark Monster fish tank