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By optimize I mean correct sized filter for my pool (Jason mentioned it was too small) and the most energy efficient pump for pool and spa. I don't mind cleaning the filter often and it doesn't appear to be getting damaged during the short time I've been here. I like your suggestion of a two...

I just want to optimize the setup since I just moved. If changes need to be made, I want to make them now. Would the filter being small for the pump explain why my clean filter pressure is at 18 psi? Or is it more complicated than that?

Thanks for the quick responses. Here is the label on the motor. motor by rjack1282, on Flickr

I just bought a new home and am trying to get familiar with the equipment. There is a Hayward C12002 cartridge filter with a design flow rate of 120 GPM. I cannot find a brand name on the pump other than the motor is a 1.5 HP Marathon so I have attached a picture to see if anyone recognizes...

Thanks for the info so far. Here are the numbers... FC = 38 CC = 0 TA = 90 CH = 370 CYA= 60 pH = 7.5 I have been holding the FC above shock level for my CYA and it's not going away. It must be a dead algae/calcium scale mixture as duraleigh suggested. I will probably have to drain and treat...

Newcomer to the forum here. Does anyone have a clue what this substance is on my pools walls? It's green, hard, and gritty and seems to be imbedded into the plaster. I have tried scrubbing it off with a steel brush to no avail. Since the attached picture was taken, I have added water (low...