I always use MFK. I used aqualandpetsplus up untill a few months ago because although the information is great, their standards of fish-keeping is IMO poor.
On an Oscar profile, they state is NEEDS 30 gallons. Prefers more. This is why I quit. Also to spend more time on MFK and gain some real knowledge. They also state a silver aro needs 75G, but this really cramps thier style.
And my biggest hate, they tried to spawn oscars by stuffing 4 large oscars in an almost bare 55G.
They also tried to breed Buttikoferis in a 55G. They put 4 in there, 2 days later they had 2 left. The others died.
Now what type of example is this to people looking into big fish for thier first time?