I have a 7k gallon pool, it only has a skimmer, is bottom drain need?

Dec 6, 2020
9
Dallas
Hello everyone, I am new here and I am making a pool renovation.
My pool isn't big, it is a 7k gallon pool.

I no longer want to use chlorine cause it destroys skin, irritates the eyes and the hair becomes a mess, so I am now going to use an ozone generator to clean my water.

In order for ozone to be effective, all the pool water must go through the pump, considering I only have a skimmer, my fear is that water from the bottom might not go through the pump, and only the surface water gets treated, I am not sure how the hydrodynamics work in a pool.

I was also considering having a waterfall as the only source of water return, but I am guessing that wouldn't be good for circulation right?

Should I get a bottom drain?

Thanks in advance.
 

mknauss

Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
34,722
Laughlin, NV
Welcome to the forum!
Sadly, you are horribly mis-informed. Ozone does not leave a residual sanitizer and you will never ensure you run all the water through the system. Following the TFPC process makes the chlorine you use imperceptible to the person. You are used to improperly managed pool water chemistry.
I suggest you read ABC's of Pool Water Chemistry.
 

HermanTX

Gold Supporter
May 20, 2020
1,168
Katy TX
Pool Size
14600
Surface
Plaster
Chlorine
Liquid Chlorine
Welcome to TFP.
Can you clarify if you have an inground pool or an above ground pool? What type of renovations are you planning?
Why do you wish to only have your waterfall as the only point of return? The returns to side of the pool help direct circulation so not sure why you wish to remove that. Maybe post a picture of your pool to help everyone understand what you have existing.
 
Dec 6, 2020
9
Dallas
Welcome to the forum!
Sadly, you are horribly mis-informed. Ozone does not leave a residual sanitizer and you will never ensure you run all the water through the system. Following the TFPC process makes the chlorine you use imperceptible to the person. You are used to improperly managed pool water chemistry.
I suggest you read ABC's of Pool Water Chemistry.
Thank you.

Regarding the fact that ozone does not leave a residual sanitizer, I was already aware of that, ozone can't be inhaled so that wouldn't be good either.

I never took care of water chemistry, so I really have no knowledge regarding that and the page you suggested me will be helpful, thanks.

I was told ozone generators could allow for a chlorine free pool, that's why I decided to get it, they told me that even if I decide to use chlorine, ozone will neutralize the chloramines and will allow for chlorine to be used in a much smaller amount, but I realized that I need to make sure all the water goes through the pump for that.

Now you told me that there is no way to make sure all the water goes through the system, so clearly adding some chlorine is wise.

But my question remains, should I get a bottom drain or is it not necessary?
 

Jimrahbe

Mod Squad
TFP Expert
LifeTime Supporter
Jul 7, 2014
20,267
Bedford, TX
I no longer want to use chlorine cause it destroys skin, irritates the eyes and the hair becomes a mess,
Jeff,

Funny... my skin is just fine, I can open my eyes underwater without any problems.. I have to admit my hair is gone, but that had nothing to do with my pool... :mrgreen:

You desperately need help, but Ozone is not the answer.. You need to take a good read through our pool school..

I suspect you are the type of pool owner who's CYA is 150 or more, you try to keep your FC at 1 ppm or less, you add powdered "shock" to your pool every weekend and then you can't understand why your pool smells like chlorine all the time.. :rolleyes:

If you want help, we are here..

Thanks,

Jim R.
 
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mknauss

Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
34,722
Laughlin, NV
But my question remains, should I get a bottom drain or is it not necessary?
Bottom drains are unnecessary. Chemicals readily disperse in a column of water.
A skimmer is necessary as that will pull in surface debris. A robot is wise to use for cleaning as it will pick up any debris that falls to the bottom.
I would not use a waterfall as your only return. 2 or 3 returns well spaced around the pool are wise to keep the surface debris moving to the skimmer.
 
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Dec 6, 2020
9
Dallas
Welcome to TFP.
Can you clarify if you have an inground pool or an above ground pool? What type of renovations are you planning?
Why do you wish to only have your waterfall as the only point of return? The returns to side of the pool help direct circulation so not sure why you wish to remove that. Maybe post a picture of your pool to help everyone understand what you have existing.
Thanks.

It is a fibreglass inground pool, I don't really want to get rid of the underwater returns, It is just that I wanted a waterfall and replacing them with a waterfall would mean less work and less plumbing, so I was just wondering if it would be ok, but now I decided to keep them along with the water fall as they are clearly important for water circulation.

The renovation I am paying someone to break all around the pool to remove the sand that has slid due to water infiltration causing that walls to bulge, the sand will be replaced with pebbles.

The gel coat is full of blisters so the pool will be drained and receive a new coating ,and some cracks on the edges will be repaired.

Since I am breaking everything I was wondering if it would be good to include a bottom drain.
 
Dec 6, 2020
9
Dallas
Jeff,

Funny... my skin is just fine, I can open my eyes underwater without any problems.. I have to admit my hair is gone, but that had nothing to do with my pool... :mrgreen:

You desperately need help, but Ozone is not the answer.. You need to take a good read through our pool school..

I suspect you are the type of pool owner who's CYA is 150 or more, you try to keep your FC at 1 ppm or less, you add powdered "shock" to your pool every weekend and then you can't understand why your pool smells like chlorine all the time.. :rolleyes:

If you want help, we are here..

Thanks,

Jim R.
Thanks.

I really know nothing about keeping pools,I definitely need to learn more about water chemistry and definitely will read a lot of content here.

But why would you not recommend Ozone? so many people use it like and it.
 

CrystalRiver

Well-known member
Jun 19, 2020
382
Massachusetts
A bottom drain is not necessary in a 7K gal pool. It's not remotely needed in my 12K gal pool. It can be slightly helpful to getting debris off the floor, if the debris happens to go into the drain. I just vacuum the pool as needed. Even with a drain, you would still need to vacuum or use a robot to clean the floor anyway.
 
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jseyfert3

Silver Supporter
Bronze Supporter
TFP Guide
Oct 20, 2017
1,344
Southern WI
Pool Size
15000
Surface
Vinyl
Chlorine
Liquid Chlorine
First off, welcome! I think this is the best pool forum on the internet. It's helped me not only avoid costly pool chemicals I don't need, but I effortlessly maintained crystal clear, algae free water all summer. Here is my 15k gallon Intex pool.


I don't want to pile on here too much, but something you said caught my eye:
I no longer want to use chlorine cause it destroys skin, irritates the eyes and the hair becomes a mess, so I am now going to use an ozone generator to clean my water.
We had some friends over this summer, in the above pool. One of them asked my wife "is there any chlorine in this pool?" She asked because it was completely undetectable. There was, in fact, chlorine in the pool. Since I had a CYA of 40, I targeted 5-7 ppm of free chlorine (FC) all summer, and even up to 16 ppm of FC (which is safe to swim in with a CYA of 40), there was zero smell of chlorine, and it had zero skin irritation and none of the eye irritation found in "normal" chlorine pools. I have to say, I've never been in any other chlorine pool where I could not smell chlorine, or had the water not bother my eyes. Until I found this site, I would never have thought that not smelling chlorine was possible, and yet that's actually the normal if you follow our guidelines here.

I was told ozone generators could allow for a chlorine free pool, that's why I decided to get it, they told me that even if I decide to use chlorine, ozone will neutralize the chloramines and will allow for chlorine to be used in a much smaller amount, but I realized that I need to make sure all the water goes through the pump for that.
That's true, ozone will help neutralize chloramines. There's two other things you need to know though. First off, it also neutralizes free chlorine, so you'll go through way more chlorine than you would otherwise. Secondly, UV light from the sun also helps neutralize chloramines. Plus it's free and outdoor pools get more than enough of it. So there's really no advantages to ozone for outdoor pools, and significant downsides (cost, greatly increased chlorine usage).
 

ajw22

Gold Supporter
TFP Guide
Jul 21, 2013
22,153
Northern NJ
Pool Size
35000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-60
How about showing us pics of what is existing and tell us what you would like to do so we understand your situation and can give you some advice?

You may find this informative...

 
Dec 6, 2020
9
Dallas
First off, welcome! I think this is the best pool forum on the internet. It's helped me not only avoid costly pool chemicals I don't need, but I effortlessly maintained crystal clear, algae free water all summer. Here is my 15k gallon Intex pool.


I don't want to pile on here too much, but something you said caught my eye:

We had some friends over this summer, in the above pool. One of them asked my wife "is there any chlorine in this pool?" She asked because it was completely undetectable. There was, in fact, chlorine in the pool. Since I had a CYA of 40, I targeted 5-7 ppm of free chlorine (FC) all summer, and even up to 16 ppm of FC (which is safe to swim in with a CYA of 40), there was zero smell of chlorine, and it had zero skin irritation and none of the eye irritation found in "normal" chlorine pools. I have to say, I've never been in any other chlorine pool where I could not smell chlorine, or had the water not bother my eyes. Until I found this site, I would never have thought that not smelling chlorine was possible, and yet that's actually the normal if you follow our guidelines here.


That's true, ozone will help neutralize chloramines. There's two other things you need to know though. First off, it also neutralizes free chlorine, so you'll go through way more chlorine than you would otherwise. Secondly, UV light from the sun also helps neutralize chloramines. Plus it's free and outdoor pools get more than enough of it. So there's really no advantages to ozone for outdoor pools, and significant downsides (cost, greatly increased chlorine usage).

Thanks.

I didn't even know that was possible either, every single pool I visited in my life irritated my eyes and had strong chlorine smell.

What if the water is heated ? can you smell the chlorine through the steam that rises? my main concern was inhaling that chlorine through the steam, cause I intend to heat my pool.
 
Dec 6, 2020
9
Dallas
How about showing us pics of what is existing and tell us what you would like to do so we understand your situation and can give you some advice?

You may find this informative...

Thanks, that was a good read.

As of right now the area isn't pretty enough to be shown here, I haven't started the renovation yet :mrgreen:
 

jimmythegreek

TFP Expert
Bronze Supporter
In The Industry
Aug 10, 2017
3,176
Morris Cnty NJ
You cannot install a bottom drain on am existing fiberglass pool. You dont need one. Fiberglass pools sometimes have low drains or skimmer equalizers, that's as close as you will get.
Now as to ozone the answer is yes it does work. But it works for small bodies of water like hot tubs amd large commercial pools with dedicated systems costing over 100k bucks. Ozone degrades chloraminates amd that's great for heavy dosed water bodies like swim parks amd spas. They work great in hot tubs, but they are covered stand alone units with no sun. I do this for a living, take my advice amd save ur money. You will be much happier with a salt system and the maintenence is super easy.
 

ajw22

Gold Supporter
TFP Guide
Jul 21, 2013
22,153
Northern NJ
Pool Size
35000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-60
As of right now the area isn't pretty enough to be shown here, I haven't started the renovation yet :mrgreen:
We are looking to help you, not see pretty.

Too many folks show up here after they did stuff and ask how they can fix it. It is much less expensive to get advice before you do anything.
 

mgtfp

Bronze Supporter
Mar 5, 2020
730
Melbourne, Australia
Pool Size
66000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Astral VX 7T
And the best that thing about TFP: It even works Down Under 😎

Only one problem: Once you experienced how a clean pool actually looks, feels and smells (or doesn't smell) like, you won't wanna swim in any other pool anymore...

Just stick around here and you'll get great advice :cheers:
 

CrystalRiver

Well-known member
Jun 19, 2020
382
Massachusetts
Only one problem: Once you experienced how a clean pool actually looks, feels and smells (or doesn't smell) like, you won't wanna swim in any other pool anymore...

Just stick around here and you'll get great advice :cheers:
Totally true! We were looking at renting an Air BnB-type place this summer, to take a safe vacation. A pool was a must for us. But every single one, just looking at the pictures, I knew that pool was not TFP clean. Just couldn't stomach putting myself or my kids in that.
 
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