HI guys! So my goldfish have always been a bit lethargic.They kinda gathered in the corner of the tank and didn't do a lot. But the other day i added one of those long air stones and cranked up the air pump to full blast and now they seem to be really active. Before i had a small air stone that was in a divers helmet decoration and also i have a treasure chest that has bubbles coming out of it. I just wondered if the new air stone and stronger air flow has anything to do with them being more active? I reckon its because theres more oxygen going in? But i thought that i would ask you guys just to get your opinions!

Oh i cant remember the exact size of the filter. But is i think its for a tank up to 200 litres and it has a really strong flow. My tank is about 185 litres more or less. Its a 4 foot tank. my filter is a V2 power box 200.

Yeah i think the air stone has solved the problem.The filter i have is really good and it has a strong flow on it so im happy,It keeps the water nice and clean!