No multiport, High Pressure, Need Help

pmarinello489

Member
May 28, 2022
22
Nassau County, New York
Pool Size
20000
Surface
Vinyl
Chlorine
Salt Water Generator
SWG Type
Hayward Aqua Rite (T-15)
Hey everyone let me start with some background information, I've been around pools my whole life helping my father, unfortunatly he recently passed and I am left with pool duties. We have a retangular inground vinyl salt water pool. Approx 21,000 gallons I think. My current setup is at least 15 years old. 1hp hayward single speed, with a Hayward Perflex EA75C and Heat pump. Last year I had constant problems with pressure or D.E leaks being passed through our the return lines (minimal). Anyway this year I opened the pool, water was dark, bottom of pool had algae, I soaked my fingers in Acid, I used descaler, I've hosed them clean, replaced some fingers, checked my plates, seals, etc. Everything you could think of I had done to the DE Nest. Start everything up this year, and of course ran great for about 2 hours. High pressure, cleaned her out again, again high pressure. Everything is amazingly old. I guess I want to know what my options are. I could of course get the same filter and not change too much. I could get a cartridge filter, sand filter, a different type of D.E filter. I am just not sure which route to go. Should I call a professional in? I don't know. Anyway my current setup has no multiport valve, or any way of bypassing the filter for a good vacuuming which I would like to add anyways and it looks like I maybe working with limited space as well. I do know how to plumb pvc etc. been around that stuff like this my whole life. I figured I'd ask you guys see what people think. Here are some pictures. Thanks again
 

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SLAMming with a DE filter is troublesome but doable. I would suggest you adjust the chlorine to SLAM level and then by pass the Filter. Check the FC in a few hours and bring it up to SLAM level again.

Then, select the "filter position and start to clean up all the algae you have killed. You'll still clog the filter but not nearly as often.
 
SLAMming with a DE filter is troublesome but doable. I would suggest you adjust the chlorine to SLAM level and then by pass the Filter. Check the FC in a few hours and bring it up to SLAM level again.

Then, select the "filter position and start to clean up all the algae you have killed. You'll still clog the filter but not nearly as often.
I don’t have a multiport valve or a way to bypass my filter, which is why I have not done this yet
 
ok, I have been buying the supplies I need to complete the SLAM process however I still have one concern. My current setup DOES NOT have a multiport valve so is it safe to run the pump and filter with no nest/fingers just to cicurulate the water for a few days then when the algae dies I can start filtering again? I don't want to break my heatpump or salt cell. Thanks
 
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Unfortunately, DE filters almost too well. Your best bet is to dive in and run your SLAM while babysitting the filter. For the first couple of days you may have to backwash and recoat frequently. But if you follow the process, the pool will clear.
 
Thanks I actually figured out a way to add two jandy valves to bypass the filter, heater, and salt cell, for circulation. I’ll be getting to work on that tomorrow and hopefully start my slam when the sun is off the pool tomorrow as well. Wish me luck I’m looking swamp status.
 
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