Hello. I'm currently keeping a rescued Glofish in 3.5 gallon filtered tank, 78 degrees, gravel and a few plastic plants and cycled with Safestart. I understand that for long term optimal care Glofish are best in schools of 6, in 20+ gallons. But for the time being in this situation I'm assuming the bioload will be ok for a 1" fish in 3.5 gallon tank? What percentage of water change is recommended for a single fish in this size aquarium? Currently the glofish is very healthy, appears unstressed and doing very well after being taken from an extremely overcrowded tank. Thanks!