Brightwell Aquatics FlorinVolcanit Rio Escuro-F - Fine Black Volcanic Ash Substrate for Freshwater Shrimp, 2lbs

This is expensive, but well worth the cost, it lowed my PH to 6 in no time(with ro water that was remineralized) and my shrimp are thriving in it like no other substrate has been able to let them. one of the best substrates for raising caridina shrimp, no ands buts or ifs.

It's truly the best!

Great product as always no complaints

Color is definitely not black. You can see the fluval stratum in the aquarium next to it in the second picture. I’m not too mad about it though since it will be heavily planted but I still took a star off because the bag clearly says black. It did look black in the bag as well. This is a 10 gallon aquarium and I used 1 bag on top of 2 small black sand bags I got super cheap at pet supermarket. Anyone who says that it clouded their water is an amateur and doesnt know how to correctly fill an aquarium up...I placed a plastic bag on the substrate and filled it up with a syphon that rested in a specimen container with holes, no issues. The water was mildly cloudy for like 30 minutes because I stirred it up a bit once it was filled up to let the bubbles out. Seems solid too and not mushy. Don’t know what it will do to PH or plants yet since I’m still waiting for the hardscape and plants to come in.

Used it for a 5.5 gallon nano tank and so far so good. Didn't cloud up the water. It hasn't lowered my pH at all so far having been in the tank for 3 weeks now. It's easy to plant in but sometimes the roots can come up easy, I think cause the particles are bigger. The color however is dark brown not black and it is noticable but I really like it. All in all I would definitely buy it again.