your local hydro store or garden store may have smaller air bubblers a small one outlet one will do the job heres a link to one simular to the one i had https://www.ebay.com/p/300-Gallon-A...nk-4-Outlet-White/1969498088?iid=172786899814 this one has 4 outlets but one is fine also buy a couple of airstones cause there not all made equal some will get blocked and some have bad airflow![]()
