Has anyone tried or used this salt yet ? Interested in some reviews or feedback

I am using it. I haven't noticed any negative affects haahaa. The first bucket was very crusty and hard to scoop. Colby replaced it with a new bucket. The salt mixes nicely once added to water and tests out as one would assume. I haven't noticed any drastic positive changes but I have only done about 30g worth of water changes.

Can you check to see if there is any reason that I can't mix Bio Actif and H2ocean 50/50 when making replacement water.

No reason what so ever. You are good to go.