Sorry I never replied...I switched out the return pump and have two separate pumps. On was a stock pump I pulled from a IM 25 Lagoon that I bought and added it with a Maxi-jet 1200 (I think). I don’t think the stock pump was enough is why I switched. This tank is great once ya change a few things out. Just not enough depth for me now.Beautiful tank, does it get plenty of flow with the stock return pump?