No worries. I honestly didn't think to check that before buying the filter. Question, though - and it's probably a dumb one - but until I figure this out, I'm wondering what I can do to keep my VSP from running so hard. I mean, the reason I'm assuming it's the filter is because the flow seems to be pretty weak compared to what it usually is, and the psi is higher than normal. Also, we had a new deck put in right beside it, so I'm assuming all that dust "gunked up" my filter pretty good. I've used a hose to try and clean the filter recently, so I think I'll do it again today. Also, I'm going to assume removing the filter and running it without is an idotic thing to do in order to save the wear and tear on my pump? I just need to keep circulation going somehow. Or maybe there's a better method to clean a cartridge filter? Like muriatic acid?