Hey guys. I came across one of my fish buddies today who has been doing this hobby for some time. He has a freshwater tank and uses marine substrate gravel and sand. It says on the package only for marine tanks and it will help regulate the ph. But i dont know if ph for a marine tank is different then for freshwater. He was talking about the crushed sea corals which I did like the look of. I have a freshwater tank to and was wondering if it would be alright to do. The fish in the tank is only a clownknive. Thank you.
Marine substrate
- Thread starter jeep07
- Start date
8.3 pH is true for all saltwater, but freshwater pH is different depending on the fish you keep, or the biome you are trying to recreate. I wouldn't use crushed coral as a substrate for a clown knifefish, as their water pH should be between 6-7. It works beautiful for African rift lake cichlids, because they require a pH of 7.8 or higher.
The buffering capacity of substrates is seriously overrated.
The calcium carbonate isnt going to be able to go into solution unless the pH in your tank is below six...it should work virtually the same as a calcium reactor.
The calcium carbonate isnt going to be able to go into solution unless the pH in your tank is below six...it should work virtually the same as a calcium reactor.
I used aragonite for freshwater it worked excellent the PH always remained stable destite heavy stocking.