I posted this in another section, but I haven't had any clear responses yet. The 3 scales on top of my aro head are a little raised, just the tip of the scales. It's been like that for 2 weeks now. I've looked everywhere on the net' but haven't found anything like this for arowana disease. I already did a WC 25-30% and added some aquarium salt, how much salt is enough??? The manufacturer said 1 tbs per 5 gallon, and my tank is 200g, so should I put 40 tbs???