[anasfire23]

I've never bothered with a filter, in my opinion it's just an invitation for fry to get stuck in it. They are really too small for a filter and when you have to do daily 100% water changes anyway what is the point of a filter? The filter doesn't remove the hormone they excrete to stunt their growth, the only way to get rid of that is to do water changes. I start doing partial water changes at 5 days onwards, like 30% daily, until they are about 2 weeks and then I do 100% changes daily. The sooner you start the water changes (which helps to remove the hormone) the faster they grow. Also you need to feed them at least 4 times a day (every 4 hours) until they are around 2 months then it can be dropped to 3 times a day until they are 5 months where it can be dropped to twice a day.