i have had my aro for over a month now and has gotten much bigger he is 4 inches with a 4 inch bichir and a 4 inch plecko with water parameters being 0 all out ph 7.0. he swims to the bottom and hides from me, will not eat from me as much. for this i got a 300 gal will putting him in here make him feel better? also saw the bichir try to nab at his bottom which is new and also a factor.
