Refilling An Inground Concrete Pool

by Lisa

We have an inground concrete pool that has been empty for about 5 yrs.

There are small cracks and we plan on redoing the whole thing.

Is it necessary to fill it up and test for a leak before we have it redone?

My husband wants to fill it and do a bucket test, if there is a leak, find the source, then drain and work done.

To me that seems like a waste of water since we are doing the concrete over anyway.

Can't you do a bucket test to see if there is any pipe leaks after the concrete is complete.

If this was your pool how would you handle it?

Thanks for the question Lisa

This is an opinion question, so I'll give my opinion.

There's really no way to know if you have a leak other than by doing a series of tests. It's obvious from the question that your husband is familiar with those.

That being said, to repair any leaks the pool would need to be drained and the repairs made.

If you're going to have a qualified tech come in to replaster an empty pool, the cracks should be taken care of.

They should take the time to sand them down, seal them, then do a good plaster job.

Many times leaks don't happen through the plaster or gunite, it's a suction side plumbing leak.

I have personally seen many pools that have sat empty for a few years and replasted.

I have never seen one leak due to poor workmanship.

I look at it like having scratches on a car that has no paint on it.

I wouldn't paint the car to see the scratches, then strip the paint off, repair the scratches, then repaint again.

You're going to sand the entire car down, reprime, and repaint anyway, so why do it twice?

Again, this is just my opinion, so you can take for what it's worth.

The final decision is yours.

To post a reply, or if you have a similar question, you can see your post on the Q&A page in the "Draining A Swimming Pool" category.

Swimming Pool Questions and Answers

Check back to this post for answers.

Hope this helps and have a great Summer.


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Pool Water Storage Chambers
by: Martin

I've got an outdoor pool. All of the associated equipment is located in an adjacent underground chamber including a smaller chamber that pool water flows into.

As the inlet pipe is some 3-4ft above the water level and water comes in at quite a rate, it is noisy. Is there any reason why the pipe can't be extended so that it is below the water level in the chamber - which should be quieter.

I've seen similar arrangements in toilet cisterns so don't see why it shouldn't work here. Any help appreciated.

Calculating The Correct Size of a Surge (Balance) Tank in an Overflow Pool
by: Jamie

I have had a 6 x 3 metre pool built. It has a capacity of 18 000 litres. The balance tank is 1600 litres or 8.8% of the pool capacity. The problem I have is even with only 3 children in the pool all weighing under 25 kg splashing, jumping the balance tank fills up and is released into the drain through the overflow.

I understand that the design rule of thumb for the balance tank is 6% to 8% of pool size, but I would have thought that as the pool size is reduced the balance tank percentage of pool capacity should increase.

Reason being is if the pool capacity is 100 000 litres and using the design rule the balance tank would be 10 000 litres so the water displaced by 3 children in the pool would be insignificant. However if we go to the other extreme and have a pool that (for the sake of argument) was 1000 litre capacity then 3 children would be a significant amount of displacement if the balance tank was only 100 litres.

So with that said what should the balance tank capacity be for a 18 000 litre pool? Surely the design rule of 6% to 8% changes depending on pool size. Any answer is highly appreciated.

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