DreamDealsSG 100 Pieces Tourmaline Balls for Betta Fish Tank Accessories. Mineral Calcium Supplement. Live Shrimp Food, Betta Fish Food, and Crayfish Food. Water Conditioner for Freshwater Shrimp

Have had them in my tank for about 2 weeks now. I have a 10 gallon tank so I spread out and dropped 10 around the tank. Recently got about 15 new shrimp and so far all are healthy and lost none of them. I typically lose a couple, especially because I have them shipped and there is stress with a new tank, etc... PH has been pretty steady also. Shrimp and my plecca love driftwood and Cholla wood. Just added 6 new pieces of Cholla wood which can typically lower the PH and ton when you first add it. Very surprised my PH stayed pretty consistent even after adding the new wood. So it seems to be doing its job ok. Definitely hasn't hurt anything. Plus having relatively smaller tank and only needing to use about 10 of the balls per year. I"m good for like 10 years! Good deal.

These have been the best additions to my tanks. The water has never been clearer and it has helped with balancing my water.

Added these a few days ago to my aquarium. The shrimps seem more active and all my fish are still alive. I did soak them in water before adding, but my water turned cloudy for a few days but, it is now clear so don’t panic if it does it to your water. The PH is now on the high end (I test my water and everything was perfect before) even after doing a water change. Overall I like the product and recommend. 4/5 because of the PH change.

While there are lots of claims out there about tourmaline balls (as with everything else pyro and piezoelectric), there is evidence of faster reductions in nitrates and nitrites. Search for studies on tourmaline denitrification, and nitrogen removal. Hopefully some of the other benefits out there are true too, but I couldn't verify them. It does make sense it would increase water hardness since it's rock, but I've only found anecdotes and not tests.

i had a problem with my order and the seller was quick to fix the issue. would buy from them again. as for these, i guess i dont have a way to know if it is actually working. they are not hurting my fish, dwarf crayfish and shrimp, so that is good. my shrimp are ignoring them in their tank. i will have to wait and see if i can notice any benefits from them

Not sure if it works. Cheap enough not to care.

I believe they're doing what they're meant to in all my tanks. My shrimp are bright and colorful and have successful molts. Water is clear as well. I dumped about five in each tank so these will last me a while. I add minerals to my water anyway but these do give me peace of mind that there will always be something in the water for my inverts and plants if I forget to dose my tanks.

They sit in the tank and I don’t know what or if they r doing anything