My blueline 70/Pan world 200ps is leaking through the case. I'm stumped but decided to order a second and work on my old one as a backup. It has taken me a week to sus this out. In the meantime, 1/3rd of the filtration is off my 300 and my bio load is huge. Stock includes 3 6-8" barbs, an 18" atobapo pike, a 14" blue Nile tilapia, a 15 or 16" dat, a 20+" mono, 2 6" geos and a medium mot/hen Ray hybrid. With the one pump off line, I connected my XL Vortec Diatom. It is doing beautifully!