Bad advise please help

Hey guys thanks so much for everyones help...

I setup the 400L tank cycled it for 72hours dosed with stability and prime to get rid of any ammonia spikes.I added alot of biomedia and bacteria starter to jumpstart the cycle

I used a plain gravel as a base and added aquasoil ontop of the gravel as well as a very fine gravel mixed in the top layer.

My paramaters are stable and ph isnt fluctuating to much since the first day its been setup.

The tank has alot of BB since i added filter media in my canister filter.

I added the fish 5 hours ago some of the have been eating some not only 2 of them tho so im optimistic.

Im testing the water twice a day keeping an eye on temps and ammonia spikes.

I have chems to help if there is a spike indeed.

Thanks!