I want to put some finer substrate in my tanks but can't find Aragonite down here in Dunedin.Will river gravel be ok for my tanks?

Will river gravel be ok for my tanks?

I dont know because you havent told us what you have in your tanks...........

Good point.

One tank has baby Malawis-Electric Yellows and Blue etc

Other has Geophagus and Firemouths.

ohk. Well i think most of those fish like higher pH's so that would be the reason for using coral sand or aragonite as normal gravel wont raise the ph.

You could use coral rock if you or your LFS has any.??

I dont keep these fish personaly so i cant REALY help alot......

Thanks,not wanting it for PH reasons,more for something finer than the pebbles they have so they can forage around more.

I ude the Salt,Epson and Bi-carb for PH.

Ohk sweet as then

Gravel will be sweet

If you belong to the Dunedin club, ask Gordon what substrate he uses in his Malawi tanks.

Thanks for all the help.