I thought about that, maybe I could start off small and up the filtration as the fish grows?
That's a good idea you have to take into account the current produced from 2-3 HOB filters.
I thought about that, maybe I could start off small and up the filtration as the fish grows?

Goldfish do not belong in a 10g...............AS for monster filtration, try building sump out of a 5 gallon bucket........Drain the the 10g by way of PVC piping and have a return pump that is not so powerful..............In the long run, you should become a saltwater hobbyist.........Because of the small tank restriction, but the wanting of asomething BIG, a saltwater NANO tank should be the sum of this 10g................