Hi i have a pair of angel fish that paired off i put them in a bare bottom 30 high and it had a side filter on it .it also has some mts snails in there well they laid on the side filter tube and they hatched this is there first time also. i turned the fliter off and have been feeding the first bites fish food and they are doing good . I need to know about adding air or something and cleaning the bottom of the tank i have been feeding small amounts also, there are a ton of them and the mom and dad are taking good care of them...iam trying not to scare them so that they don't eat them. any help out there...thanks alot