Just got a new 55 gallon aquarium setup and let it run its cycle the tank. I had a under gravel filtration set up so I just use that at first but upon furthermore research I discovered nobody uses gravel bed filtration really anymore. So I bought a AquaClear fluval 50 but I'm still running the gravel bed filtration is this a bad idea? I was planning on buying another Aqua Clear Fluval 50 to add with it. I've been keeping my temp at about 78 79. My pH was a little low like 7.5 but I got it up to about 8.5 now I added 6 fish 3 days ago three Kennyi male cichlids one Demanson's Cichlid not sure sex and two Golden cichlids female. All about 1 inch. I have been testing daily and all the tests are within parameters what's my alkalinity being pretty high around 300?.