Whoops... Sometimes I look at them and they look so hungry so I give them a bit of a nibble. I should stop that.
My tank started to smell a bit today, a couple of hours after I fed them... I was going to clean out the whole thing as my brother said the water looked murky and I was worried with having dirty gravel. I think I'll stick to your advice and take out a third of the water and replace it...
Also, two small questions: Because I don't have a filter, how often should I regularly clean the tank?
Do I take out the fish when replacing a third of the water?
Thanks again for helping me out! ^.^







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