Hi, again. Sorry to bug with so many questions, but as I'm working on trying to get the pool clean, I'm beginning to wonder if I just need a new pump/filter. I have a Hayward EC40 DE filter that I cleaned in MA last night, hooked it up this morning and the pressure coming out is great and seems like it's working well, but then after a short period of time, the output just drops like a stone and there is no circulation. When I bump the filter, it starts working great again and only lasts a little bit. Also, as soon as I hook the vacuum up, pressure drops like a stone again. I've been working to keep my #'s for chlorine, pH and etc. where they need to be, and the pool is cloudy greenish in color still. I'm thinking maybe my biggest problem is a lack of proper filtration? Any suggestions? Again, sorry to be a pain but thank you for the advice.