empty salt H20 pool down clean out vs washing machine. hose vs 1.5" vs 2" hose

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outdoorsgal

LifeTime Supporter
Jan 24, 2015
948
Phoenix, AZ
I am going to empty my salt H20 pool. I could empty it into my washing machine that's in a shed that's attached to my house which is 48' ft from the pool or my cleanout which is 155' feet from my pool.
My hesitation is that salt and CH may not be great in the washing machine and if the hose fell out it'd flood the attached shed but it's closer to the pool so less hose to buy and store (and less $ for a shorter hose) so the washing machine seems like a great way if I can feel secure about it.

Re size and location of where we plan to empty the water, would it make it harder to manage if we got a larger diameter with lots of force like when we backwash the pool?

I bought a 1/3 submersible pump, as seen on TFP https://www.amazon.com/dp/B000X07GQS?smid=ATVPDKIKX0DER&ref_=chk_typ_imgToDp&th=1 , and have a 1.5" hose on the way with an adapter to fit the hose on correctly if I bought the right part (I don't think I did and this may just need to go back: https://www.amazon.com/dp/B005MKGQGA?psc=1&smid=ATVPDKIKX0DER&ref_=chk_typ_imgToDp

This is the hose I bought before I took the time to measure... I can send it back: https://www.amazon.com/dp/B07FY8FNFV?psc=1&smid=AEPR4LMOKNPKA&ref_=chk_typ_imgToDp

I also have extra 2" gorilla hose sitting around if I were able to fit it to the submersible pump.

Seems like silly question but y'all are always so nice about it. :) thx!
 
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You do not really need the check valve assembly. You will need a 1 1/4" NPT female fitting so your can attach the hose to it with the hose clamp. If your washing machine drain is bigger than 1 1/2", it should work. But most are not that big.

Otherwise return the hose and use a 3/4" hose. That will easily work to the washing machine drain. The pump will give you 4 or 5 gpm I suspect with that set up. Or at best 300 gph. So about 48 hours to drain your pool.
 
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YippeeSkippy said:
Do you know where your clean out drain is? Can you hose it to there? Can you get the hose directly down the washing machine drain pipe (bypass the machine entirely)?
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now that u mention it, this brings up more thoughts. I have a clean out on the back of my house, too, but the kitchen sink vent was taken out and we have a studor under the kitchen sink. I'd think with such a low flow of h20 we don't have to worry about any links in our kitchen but it's on my mind since we had a dishwasher flood before that caused a remodel (hence the syphon valve I'm still not happy about that was installed). if we were putting it in the washing machine I guess it'd probably have to then pass by the same kitchen sink, under the house, then to the front clean out then to the street. so I wonder if in the long run if I choose to empty my pool the same way every couple years or so, do I need to worry about integrity of my plumbing due to the salt, CH, or stabilizer... in the water? If not, and the flow will be so low then maybe I'm safe doing it this way. The front clean out is 155' from the middle of the pool. when the pool company emptied the pool last time (they emptied it cuz they were doing warranty work) did it in the clean out in the front of the house and must've used a 200' hose or cut a 200' hose? when I emptied the pool the first time I couldn't find my cleanout and didn't know about the one on the house so emptied it to the street with 100' hose-and then got a letter from the city.

I looked behind the wachine machine and I could bypass the washing machine cuz it seems the washing machine hose just sits into a pipe in the back wall. Now I know 1 way scorpians can get into our drains. Now I also can see how easy it'd be to divert the h20 from my washing machine outside to water my plants, too :).
 
mknauss said:
You do not really need the check valve assembly. You will need a 1 1/4" NPT female fitting so your can attach the hose to it with the hose clamp. If your washing machine drain is bigger than 1 1/2", it should work. But most are not that big.

Otherwise return the hose and use a 3/4" hose. That will easily work to the washing machine drain. The pump will give you 4 or 5 gpm I suspect with that set up. Or at best 300 gph. So about 48 hours to drain your pool.
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if i'm looking at the right thing, behind my washing machine there's a flexible cheap plastic hose that's sitting in a pipe that's a bit bigger than 1 3/4" (seems to be a 1 7/8") in my wall (on the inside). that must be the drain and so sounds like the hose I bought would work from what u r saying but if we were to do anything else at the same time like use the dishwasher, which is used 2 + xs/day, flush toilets, shower, I wonder if it could back up and come out under my new kitchen sink/cabinets through that dumb studor vent we have under the sink? I know the studor is not supposed to let h20 out but I think it could if all the oxygen had been let out of it.

I know a bit of the area under my kitchen sink cuz the construction workers got cement down there and had to jackhammer it out... I have my old cleanout pipe that attaches the kitchen sink agrea. seems to measure at 1 7/8" (more than 1 3/4) and at the opening is 1 3/8" or so (smaller). I forget about the pipes under my kitchen sink. I think they'd be the same as the rest of the drain then when it reaches the toilets it's a larger drain in diameter?

I tend to overthink things but I'd like to have a system I can feel confident about using for the rest of my life as I plan on staying in this house.

thx!

I'm trying to picture what that amount of flow would look like. Any thoughts on this worry I have? thx!
 
The flow will be less than 40 gpm with the big hose. Likely closer to 20 gpm.

Not sure what a 'studor' is -----
 
mknauss said:
No. No harm will come to your plumbing.

I would not do that. The soap will not be good to your plants.
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I wash with enzymes only. no fabric softener or toxic stuff. somexs I add vinegar and baking soda. I'd probably have to decide not to use baking soda anymore if I wanted to water my plants with my washing machine. vinegar would probably be great for the pH though! maybe if I got the amounts correct, I could get away with using a vinegar and baking soda mix. soap can be good to rid aphids... I garden organically and would be watering some fruit trees and perhaps a few veggies in the area. I wanted to poke holes in a pool backwash hose and that way it could expand and contract when necessary. I've had the plan, just haven't done it. I'll have to cut a little hole in the attached shed.
 
Sounds good. My yard has nothing that takes much water, except the pool due to evaporation. This is the desert.
 

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mknauss said:
The flow will be less than 40 gpm with the big hose. Likely closer to 20 gpm.

Not sure what a 'studor' is -----
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I should've said "studor vent." if u don't have a roof vent on a sink it vents out through a vent that's on the plumbing under the sink. it pops up as needed. i worry about water coming out of it if there was too much h20 coming through. in a normal situation where u have a vent that goes to the ceiling it would just run up there if it got backed up but in my case I worry that the h20 would come out the studor vent which would flood under our kitchen sink.

i may have to do a test to see what 20 or 40 gpm looks like. the only way I can think to do this test is to turn on a hose and see how long it takes me to fill a bucket and do that math from there depending on the size of the bucket. or get me a 200' hose and just empty the pool to the front clean out where it'll go straight to the street.
 
Newdude said:
With easy Amazon returns, you can get a much larger pump for similar money.


1 HP
1.6 HP
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I went off of what was shown on TFP and it said to go with 1/4 to 1/3 HP. I thought of doing 1/2 HP, but I guess I still need to figure out how much flow I want anyway, depending on where I decide to empty the pool. do u empty your pool down the clean out so lots of flow would be good? when I backwash it takes a person standing there to make sure the h20 stays in the drain, but I can imagine that a pool pump backwashing must be so much more powerful I have a pvc "L" that holds the hose into place into the cleanout drain. I guess I could put a cynder block on it and it'd stay in place that way. getting it done faster seems like a perk, especially so I don't ruin the submersible pump
 
outdoorsgal said:
I went off of what was shown on TFP and it said to go with 1/4 to 1/3 HP.
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These pumps are newer. They used to be alot more expensive. My last pump was a 1/3 like the one you bought and it cost $125. It's half that now.

However, the bigger pumps I linked will be no good for home drains. They're too powerful now that the rest of the plan has surfaced. I just toss my hose in the yard and let er rip. Our hardiness is such that the vegetation can all handle my pool water. In fact, it LOVES it.
 
Newdude said:
These pumps are newer. They used to be alot more expensive. My last pump was a 1/3 like the one you bought and it cost $125. It's half that now.

However, the bigger pumps I linked will be no good for home drains. They're too powerful now that the rest of the plan has surfaced. I just toss my hose in the yard and let er rip. Our hardiness is such that the vegetation can all handle my pool water. In fact, it LOVES it.
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I see now the links u had added. yes, they r inexpensive! I'm not sure when tfp included the links to the pump I got. I wonder if I drain to my clean out would I be able to use a pump like u recommended or would that be almost "too"powerful as far as flow? I'd think if I put a cynder block on my set up it'd stay in the cleanout and be done the drain in less than a day. I can't put it in my yard cuz I have a salt pool, otherwise I would've been all over that!
 
outdoorsgal said:
but in my case I worry that the h20 would come out the studor vent which would flood under our kitchen sink.
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Your Studor vent is essentially a one way check valve allowing air in and nothing out. So long as it's working it won't allow water to flood out.
 
YippeeSkippy said:
We always run a hose to our main clean out/waste drain in the back when emptying the hot tub. What problems do you forsee, Dude?
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I was speaking to using the larger pumps I linked with a large diameter hose. The street sewer can only handle so much at once, and draining a pool in 3-4 hours might overwhelm that.
YippeeSkippy said:
It is just using a normal garden hose on the sump pump.
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Yes. A garden hose would be no problem with a 1/3 HP pump. (y)
 
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YippeeSkippy said:
We always run a hose to our main clean out/waste drain in the back when emptying the hot tub. What problems do you forsee, Dude? It is just using a normal garden hose on the sump pump.
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I was worried that especially if I use a larger hose, taking showers, flushing toilets, using the dishwasher... the water might out the studor vent under the kitchen sink. I guess at this point that's the only thing to worry about. Sounds like in GA the main clean out is in the backyard? Here in my neighborhood in Phoenix the main clean out is in the front yard and if u put it through the washing machine or clean out in the back of the house it has to run through the plumbing under the house before it gets to the main clean out.
 

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