masanori Posted December 25, 2009 Report Posted December 25, 2009 Well I have decided to have a gunite pool installed this spring. A concern is how long the plaster holds up. Also is the floor rough on the feet. I have 5yr old boy. Can anyone tell me a gunite pool contractor in hudson valley NY Quote
quantumchromodynamics Posted December 26, 2009 Report Posted December 26, 2009 Plaster can last for 20 + years if the chemistry is properly maintained. Plaster can be destroyed in less than a year if the chemistry is not properly maintained. If roughness of the plaster is a concern, you would do best with a marble aggregate. Pebble or quartz is very rough on the feet. I recommend Marblemix dolomite Ultra aggregate. Reference 1 Quote
masanori Posted December 26, 2009 Author Report Posted December 26, 2009 Plaster can last for 20 + years if the chemistry is properly maintained. Plaster can be destroyed in less than a year if the chemistry is not properly maintained. If roughness of the plaster is a concern, you would do best with a marble aggregate. Pebble or quartz is very rough on the feet. I recommend Marblemix dolomite Ultra aggregate. Reference 1 Having a salt generator help the life of the plaster? Quote
quantumchromodynamics Posted December 26, 2009 Report Posted December 26, 2009 High salt levels will make the water more aggressive towards plaster. The poolcalculator does take salt concentration into account when calculating the CSI, so that helps offset the effect of the salt. The problem with salt water chlorine generators and plaster is that plaster needs to have a positive CSI to protect the plaster from dissolving and the salt cells work best with a slightly negative CSI to protect them from getting scale. It's tricky to get a balance that works for the plaster and the salt water chlorine generator at the same time. Quote
chem geek Posted December 26, 2009 Report Posted December 26, 2009 Use of 50 ppm Borates helps keep the pH more stable in an SWG pool and also helps reduce the local rise in pH near the hydrogen gas generation plate in the SWG cell so helps to prevent scaling. Quote
masanori Posted December 27, 2009 Author Report Posted December 27, 2009 Use of 50 ppm Borates helps keep the pH more stable in an SWG pool and also helps reduce the local rise in pH near the hydrogen gas generation plate in the SWG cell so helps to prevent scaling. Thanks guys. Maybe chlorine is the best choice Quote
Dreamscapes Pools/Design Posted January 11, 2010 Report Posted January 11, 2010 Honestly, no chlorine is not the best choice. The facts are you will have a much greater chance of imbalanced PH levels in your pool from Chlorine than from Salt. Chlorine evaporates and is so unstable you need to be a water chemist or a very involved pool owner to keep it right. Salt systems do need to paid attention to, but in the scheme of things, is far better than Chlorine. Outside of your concern for your marcite finish, salt is by far the easiest method of maintaining a clean and safe aquatic environment. We spec salt systems all the time for hotels and nearly all of our residential clients for a whole host of reasons. A short list is below. •Yes, depending on the amount of calcium in your water you may find that scaling will appear on your pool surface if you have a plaster pool. A salt system attracts calcium to the titanium plates and then can discharge it back into the water. This excess calcium can result in a buildup on the pool surface. I have found this to be most common in self cleaning salt systems. •The salt content in a saltwater pool is about the same as the salt content in the human body. It definitely does not harm pool equipment. Here are some of the advantages of having a saltwater pool: No toxic chemicals to buy, store and handle; No stinging eyes and no chlorine smell; Lower maintenance. The main disadvantage of salt water pools is that it reduces the revenue generated by pool chemical sales. Aside from the initial setup cost I don't think there are any disadvantages in salt water pools They feel better to swim in according to many people and you don't have to worry about constantly having to handle chlorine. and now that you can get alternative salts to sodium chloride in Magnesium and Potassium chloride you can even water your garden with the backwash which can be a boon with some of the water shortages we are experiencing. Saltwater pools are cheaper to maintain. No need to buy liquid chlorine and slug it home from the store. You do not have the harmful effects of chlorine i.e eating elastics out of your suits, friendly to dyed hair, excellent for light skin disorders. Your hair is softer as salt used is water softening salt. Be very conscious of the fact that you must make sure your pool is balanced at all times as you will have to add stabilizer. I have had a saltwater pool for 3 years and when the hot summer comes and everybody is throwing every chemical in the world at the pool trying to keep it clear, you will have peace of mind. Just like the Caribbean, but with 1/10th the salt content. You wont make a mistake going for the salt, its worth the extra monies. Good luck. Quote
quantumchromodynamics Posted January 11, 2010 Report Posted January 11, 2010 Honestly, no chlorine is not the best choice. The facts are you will have a much greater chance of imbalanced PH levels in your pool from Chlorine than from Salt. Chlorine evaporates and is so unstable you need to be a water chemist or a very involved pool owner to keep it right. Salt systems do need to paid attention to, but in the scheme of things, is far better than Chlorine. Salt pools are chlorine pools. Quote
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