hello, i have a 20g q tank ive got pictus cat that is new and has been in q for 3 weeks he has been looking great i also have new rainbow and hatchet fish in this tank about the same length of time they have both had problems the hatchets got ick the rainbows mouth fungus - i have treated the ich so thats ok the rainbows are being treated for mouth fungus now for the last week or so with melafix its almost gone - my question is since the pictus has been ok can i move him to his permanet tank now or shoul i wait at least 4 weeks from the time that all fish in q show no signs of illness???