I have a Oceanic 65. Currenly I have two VorTech MP10 on it and it works great. This is what I recommended but if you want cheaper, Koralia 4 will also work OK. In this tank I used to have two Koralia 4, one on each end. The flow is great but the PH is bulky and there is no night mode, or varible flow like in the VorTech (I like both of these feture a lot). I use the Lagoon mode during the day and night mode start at 9PM-7AM.

with me, the equibment is the least of my expenses.