The pool at the house we are moving to has no sand/glass filter. Neither does it have skimmers and outlets along the sides of the pool (5 by10 M). It has filters ressembling socks. It’s a chlorine pool.
Our friend’s pool is similar having nothing on the sides. All on the one end like our new place.
Friend’s pool has socks with net bags of fibre balls. Hers is a salt pool.
Are pools like these two common having no sand/glass filters and having all the works at one end?
Should we consider adding a sand/glass filter? Pool’s been in operation some 20 years but I wonder whether less chemical treatment would be required with better filtration. Is it necessary to run the pump 12 hours a day in the hot season? I would appreciate any advice.
Pools with everything in one with strainer socks (I dont like to use the word filters for these type of setups as the bags are quite course i.e. not removing the fine stuff) are referred to as mono block setups. Water movement is poor and have many dead spots with little or no flow. That does often mean using more chlorine or higher levels which as it has to work on more dirt etc produces more chlorine byproducts (DPB’s, THM’s etc) those hang around about the waterline so we often breath these in. They give rise to the classic pool smell.
Yes the systems work to a degree, one customer had such poor water movement at the top end of the pool it would go green and nasty just about the halfway line with std levels of chlorine. In that pool the salt chlorinator could not keep up a high enough production of chlorine to raise the level any higher, 12m pool. My solution as we could not go chopping the pool about because of waranty issues and a rented summer season was to get a pool robot, these stir up the water from the powerful jet used to hold them to the pool walls. That was sufficient to move the water around and mix the chlorine to the far end. Of course that doesnt cause an improvement in water quality or chemical usage because the strainer bags are not very good to start with. Yes if you can add a filter with AFM ng without a huge amount of work its definitely worth doing as chemical usage and therefore chemical byproduct production would be much reduced. Generally the pumps used in mono block setups are expensive to run and replace. Run because they are trying to do everything from one end. They do work when sorted out but are a devil when they go wrong but they were the catalyst for my low energy setups.
Thank you for this very useful information. We will look into the cost and practicality of including a AFM ng filter. We complete on the house tomorrow God-willing. May have more questions! Looks like good timing with the weather forecast predicting a hot couple of days following our move in.
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All the best for tomorrow! Take some photos if you can please
I will get my jet washer on the pavings next week. Expecting our belongings to be delivered next Tuesday. We hope nothing has been affected by dampness.
It looks to me like you can have two pumps though I have no idea why this might be needed.
Ah yes the Filtrinov unit. You have the single motor unit? Is the pool fibreglass or liner? Cannot decide from the photo
One motor. There is a very old liner. We will be changing it asap.
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May I suggest at sundown with a watering can, old trousers and wellingtons. Walking backward with a bidon of javel or two diluted 2 parts water. Leave over night and just wash off in the morning/lunchtime ish. Saves many hours of jet washing usually and kills the lichens and black spot mould etc.
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Ok, you may consider doing any mods to the filtration first before the new liner, looks like it could do another season.
To try and make the orignal concept work properly 
Does nothing for your electricity bill though 
bidon of javel or two? Javel I’ve seen I think - we made our first visit to a pool shop today - Cash Piscine. Bidon? The liner is 20 years old though it was we are told a very good one.
edit - my wife tells me bidon is also the same thing in Polish.
The Brico sheds are usually better value, 20ltrs about €15-16. 20 year old liners had some heavy metals in them, now outlawed so outlast the new ones generally speaking. Its the plasticisers in the pvc.
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Wow, that is a big slug of water for push and suck at just one end! I thought monoblocs were just for round play-tanks. Obviously not!
If you are changing the liner and thinking of a filter, maybe worth the extra to put in a traditionl system with suck at one end and push at the other. It will mean lifting a row of tiles and digging a shallow trench, But as he says, the savings in electricity will more than cover the cost!
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I would suggest not at each end but across the pool if possible. Luckily the paving is only about 5 wide and not a huge terrace.
My wife Ewa is concerned about Javel damaging the vegetation at the edges.
The Chlore Lent we have from Cash Piscines has no mention of what to do with the plastic wrappers. Have I assumed correctly they are water soluble?
Had my first swim yesterday evening. Apart from the insects it was delightful. It’s such a shame to see so many ending up in there but lots seemed to be okay after I fished them out. I was thinking of having a tea strainer handy for those I missed when I’m in there 
You can’t be sure when they are still alive but annoyed.
Oh yes, the tablets already in the baskets were part used. Not sure when they were added. What is the best thing to do with them? Thanks
Throw them away and install a salt water generator.
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I don’t think the plastic wrappers are water soluble - plastic, so put in the recycling. Dont worry about the vegetation (grass?) either, it will be fine. You can get fine surface nets to remove insects, just wait until the ants start flying😲
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What he said 
No worries about vegetation unless rare plants.
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