Here is what some happy Pool-Owners and Pool Professionals have to say about Jolly Gel:-
Just wanted you to know that having recently watched your video I purchased your Jolly Gel and have found it to be the most effective water clarification product I have ever used in the last 22 years of pool ownership so congratulations on a wonderful product.
Sincerely, Mike Butcher, Mallorca
I have to say that I've seen a lot (hundreds) of products touted for swimming pools claiming all sorts of miracle short-cuts. But, having had an issue with a persistently cloudy pool that normal floc was not sorting out, I tried Jolly Gel for the first time. I haven't stopped using it since and the clarity of the water it gives is honestly incredible. I'll never clean the pump basket again without putting a cube in! Justin Orton, Javea
Just used our first Jolly Gel!!! AMAZING..... afraid we didn't take photos.... we are amazed!!! It's a small plunge pool and looks fantastic!!! Cathy Dodd, Nerja
This is the first time I have used Jolly Gel in my pool. Within a few hours the water was "crystal clear". If it was not for the jets making ripples in the pool, you would think there was no water in it! The most clear and clean our pool has ever been. I have no hesitation in recommending Jolly Gel. - Richard Allan, Torrevieja.
This stuff is brilliant. Pool nearly spotless and only been in three days.
Will definitely be getting some more. Thanks. Karen Clements, Casares
Jolly gel did it again. Pool is clear. Yiiiipppppeeee! Pat J, Alhaurín el Grande
We have found Jolly Gel to be invaluable in our professional maintenance of 50+ pools on the Costa del Sol, Spain. Every one of them is as clear as water can possibly be, and we don't need to backwash the filters very often. This saves a lot of water! Andrew, Coín
I've only been using Jolly Gel a short time and the effect is noticeable when the pool light is on at night and there is no beam visible in the water! Lovely clear water! - Julian Lucock, Coín
Hello I need to write to you as my pool water has always been a problem to maintain mainly not helped by high levels of dust from the Sahara desert. A friend gave me a packet of your Jolly Gel. I was told to put one cube in the pump basket and run the pump overnight, wow , what a surprise in the morning, the water was brilliant. What a great product. - Jack Ward, Cartagena, Spain
I have been using Jolly Gel now for several years and I have found it to be invaluable not only as a day to day maintenance product to keep my pool sparklingly clear, but also on occasion in other pools which have a hazy cast to the water. The use of one Jolly Gel block clears the pool overnight, ready for backwashing the next day, to leave a clear pool ready for use. A simple to use product I would recommend to anyone who has a pool. Barry B, Velez Malaga
If you need to know the bad points of Jolly Gel I can only think of one, and that is running out of it! It has worked absolute marvels on my pool. The clarity is crystal clear, as if the water drained out overnight. Nikki B, Alora
Since we started to use Jolly Gel the pool is so clean that we only need to backwash the filter every 6 weeks. This saves a lot of water! Anthony Ailsbury, Murcia
I already use Jolly Gel, I purchased it from the Over Fifty's Show, and am very pleased with the results, hence the re-order. Elaine, Velez de Benaudalla
I was having problems with a cloudy pool a few weeks ago, I tried Jolly Jell, started seeing the difference within about four hours, clear in about 16 hours. Mark Ellison
Tried it for the first time.... from green and cloudy to crystal clear! Silvan Xuereb, Malta
I was having problems with a cloudy pool a few weeks ago, I tried Jolly Jell, started seeing the difference within about four hours, clear in about 16 hours. Kris, Salobreña
Can't believe how well this stuff works, I had a cloudy pool and thought I would give this a go as the reviews seemed quite good. The pool is 38,000 litres and as per the instructions I dropped one cube in to the pump basket - wasn't expecting over much as I found it hard to believe that a small cube like that could have any effect on that amount of water, well, 4 hours later and the water was almost perfectly clear and today, 24 hours later, every trace of cloudy water has gone, it's now crystal clear.
Got cloudy water? got a sand filter? just buy this stuff and get it sorted quickly. Chris Nicholls. (UK)
Have been using this brand since it was suggested to me by my pool shop many years ago. Makes quite a difference and people comment on the sparkling water in my pool :-) T.J.
Great product. Does exactly what it says. My pool is looking crystal clear . Susan Prange
I rarely leave reviews. Have been battling to keep my pool clear for years. These little cubes are literally magic. Amazing water clarity like I've never had before within 24 hours. Mark Copeman
Brilliant product. Cleared the pool in a couple of days. Lorraine Steele
We had been told about it... Tried it... perfect! We have had a swimming pool for 18yrs and never have we had the water this clear. Stuart Perkins
PS. Swim Safe! Download my eBook 'The Pool Safety Bible' for just $0.99c
Copper ion (Cu++) is a very effective algaecide used in pools to kill and prevent algae (link to Algae page )
It's particularly effective against Black Algae, which is not controlled by normal levels of Chlorine (link)
Copper usage can, however, cause stain formation. Over time, and if over-dosed, soluble copper salts can precipitate from pool water and deposit on pool walls, turning the grout or plaster blue
Copper salts react with Chlorine to produce cupric oxide and may cause grey or black stains on pool surfaces
Copper-based algaecides and algaestats are the commonest source of copper salts for pools but Copper Sulphate is also a preventative treatment and an effective cure for many algae attacks.
It's also much cheaper than proprietary chemicals
The recommended dose for Copper Sulphate is 3 grams per cubic metre of water (5 ounces per 10,000 US Gallons),
dosed TWICE A YEAR ONLY into the skimmer, with the pump running
The manufacturers, in their helpful product labels, often suggest that this dose should be repeated monthly but twice a year is usually sufficient because the chemical remains in the pool and is only diluted by periodic backwashing and 'splash-out'
If dosed monthly there will be a build-up of Copper Sulphate; and that will stain hair, nails, grout and plaster a fetching shade of blue
Copper can be tested for with Test-strips(link) and some Test-kits(link)