I bought my pool used a year ago. My water is cloudy and I have noticed after I backwashed and rinsed there is sand going back into the pool. From all the forums ive read im guessing broken laterals. I checked those and none look cracked or broke but my husband replaced the pipe. Everytime I try to look up the model #Sw256TPAKS I cant find anything on that number so I can find replacement parts. It is a Hayward Swim pro. is there another number I should try looking for?