What to do with antifreeze in the filter?

merluc3

Active member
May 25, 2016
36
Coventry, CT
Hi all, this is my first year opening my new pool. I have never had a filter that stayed outside in the winter with underground lines. The pool builder put antifreeze assuming it was pool antifreeze) in the lines when he closed it.


To open it, what do I do with that? Backwash before running the filter? I thought I read somewhere that it just gets blown back into the pool. That doesn't seem right to me though? Want to be sure before I put something in the pool that shouldn't be there [emoji12]


24' Round Radiant partially in ground pool. Hayward sand filter S166T with 1.5 hp 2 speed Variflo pump

Sent from my SM-N920V using Tapatalk
 

tlevy

Well-known member
Jun 3, 2015
357
Ottawa/Ontario
I use my wet dry vac to remove as much as possible. Then vacuum to waste for first opening.

I saw one post here where the person suggested opening one jet at a time, and directing return water with a hose outside the pool!


18000 IG, SWG, 1/2 HP Tri Star + Solar PV direct DC Lorentz pump, Sand filtrt
 

Donldson

TFP Expert
LifeTime Supporter
In The Industry
Jun 12, 2009
3,346
NW Ohio
Chlorine will break it down, so nothing wrong with letting it blow back in to the pool. If it is easy for you to shop vac it out or flush any to waste though then that will save you some chlorine in the long run.

Sent from my HTC6545LVW using Tapatalk
 

Zappafan

LifeTime Supporter
Aug 5, 2014
151
Hampton, IL.
I use a 1.5" x .75" galvanized bushing with a .75" mip x female hose adapter to push the antifreeze out. Just be careful not to cross thread the plastic threads on your return lines. This way you don't freeze your hand off trying to seal the hose in the return. I don't drain my pool below the returns like many do.

Sent from my SM-G930V using Tapatalk
 

samt

Well-known member
May 18, 2013
420
Long Island NY
The first thing I do after I hooked up the pump from winter storage is to switch the valve to vacuum to waste,pull return and skimmer plugs, prime pump and turn it on. Everything in the lines will go out the backwash line.
 

Zappafan

LifeTime Supporter
Aug 5, 2014
151
Hampton, IL.
Yes backwashing is the act of cleaning the sand in your filter. Vacuuming to waste the water is diverted out of the multi-position valve without entering the filter.

Sent from my SM-G930V using Tapatalk
 

Other Threads of Interest