Glad you got it figured. My set up with the ECP 2 row with 2 12" paddle fans(3300cfm total) and a electric PRP 35gallon pump are not cooling my filled 511. I'm gonna try the bigger meziere pump. Think its 44gallon pump. This combo will cool very good with milodon mechanical pump with 17" flexfan and shroud. My problem is cooling at speed only. Idle cooling no problem.
