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Is there any way to remove dark spots or 'burn marks' after 30-inch chlorine tablets are left on the bottom of a gunite plaster pool?
Wiki User
∙ 16y ago
The black (burn) marks show up on Gray plaster pools. White plaster pools will show up as a yellow or rust color. Remove the tabs and put them in a proper floating devise, the marks will go away in time.
Try using wet and dry sand paper on the burn marks to reduce their visibility and roughened plaster.. additionally, tablets of any size should NEVER be placed or tossed into the pool or skimmer. K
Wiki User
∙ 16y ago
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Why is it important to understand the chemical composition of chlorinating agents used in swimming pools before using them?
Because each different type of chlorine will effect your pH differently. Each type of chlorine also leaves behind different ingredient residuals. For example.. Liquid chlorine leaves behind some salt, tablets leave behind chlorine stabilizer, some shock bags leave behind calcium and other shock bags leave behind chlorine stabilizer. There are many other types... Also, do not ever mix them together. The results could be chemically life threatening and explosive. Bottom line....read the label and really know what you are buying. Aquaticpoolsystems.com
Can you clean scaling and dirt stains from a plaster pool without draining?
If your pool filter is up and running, also it is best to clean the walls and floor if you have a normal to high chlorine level because this will be also your cleaning agent. Take a soft bristle brush, get in the pool and start cleaning, all the above should come off. it is better if the filter is running so you can vac out the dirt, when the dirt goes to the bottom of the pool.
How can door frames be fixed to solid walls?
single bottom plate(Ciel) then studs 91.5 tall @ 16in on center and two top plates, this gives you a 8ft wall. Best way if possible to lay everything on flat surface and shoot through bottom and top plates into studs. Toe nailing,(shooting nails at angle is not as strong as the other way.
How do you clear up algae in pools?
Black algae is a serious problem, particularly during the summer. In the semi-private pool we had, the technician tried to fix the problem with the water in the pool. We ended up [hired a new pool company] having to empty the pool, do the remedial things to the pool surface, replace the sand filter. It was expensive and probably would have been easier to do it the hard way first.If it is at the bottom, brush with s/s brush turn pump off and add trichlor on top of the algae, let it seat for 2-3 days, brush again. If it is in the walls add silver based liquid algaecide as per manufacturer's recommendations."Black Algae" (actually blue-green algae) forms in cracks and crevices on pool surfaces, especially plaster finishes. We normally find black algae growing in, but not limited to, shady areas of the pool.Black algae is more typically found in concrete or plaster finished pools; it is very uncommon to find it in vinyl liner pools. It is known for a heavy slime layer and "skeletal growths" that make it impervious to normal chlorine levels (1.0 - 2.5 ppm). Black algae can grow "condominium style" providing layers of algae one on top of the other. Slight cracks in plaster or fiberglass walls are perfect breeding grounds for black algae especially when the pool is not properly maintained.Two ways to get rid of black algae, algaecides typically do not work, mainly just a waste of money. First way is to spread either cal hypo or granular triclor directly on the algae. Lower Ph so the killing form of chlorine is more effective generally 7.0 to 7.4. You first should brush the spots with a ss brush. Do not do this on a dark plaster or vinyl liner pool, chlorine will either bleach or stain color. When doing this turn off pool sweep for a few days. Second and most effective way is to get two cases of liquid chlorine 8 gallons, and two gallon of ammonia hydroxide (most pool stores can order this for you) and muriatic acid. Close the pool for two weeks. Do not let anyone swim or animals drink from the pool for at least two weeks (diarrhea). Lower pH to around 7.0 Add the 8 gallons of chlorine around the pool. Turn on filter pump let run for 24 hours at least. Now you have to add the amonia hydroxide. When you do this make sure that no one hangs around the pool for a few hours (there are some gasses from the mixture of chemicals). let your system run as normal after the 24 hours. Brush pool with ss brush as often as possible. And make sure that the pool is not use. can not stress this enough. Wait till the chlorine residual has lowered to safe levels to reuse pool. At least two weeks. May have to add more chlorine after week one depends on the amount of BA, may have to try method one during this process. What this does is with the combination of ammonia and chlorine raises the residual to around 50 ppm and burns out the BA from the root. Once this is done there will or may be etching in the plaster from were the BA was, to help with this get a sanding block from your local pool store or professional, and sand the areas were the BA was to make the plaster more uniform.I am a pool professional and have done this on a few pools and works like magic. I have done this to a pool that was covered with black algae, tried everything on this pool and nothing else worked also did the first way that i talked about, only helped a little just slowed down.Do not scrub the pool with acid, will do nothing other than burn plaster. You can use liquid chlorine to scrub pool, this works to kill the algae and helps to bleach the plaster and disinfects the pool when a pool was not properly sanitized. Muriatic acid is not going to kill the algae, only will temporarily make the algae disappear. If you have your pool re-plastered make sure that the plasterer cuts away the spots were the algae was. I have seen pools that had Black algae before being re-plastered and soon after new plaster was applied it came back. Some times you have to remove the gunite as well.CautionMixing Any type of chlorine product with amonia hydroxide is asking for a dangerous out come. Don't Do It.Balance your pool water, brush the algae spots with a stainless steel algae brush to break the outer shell, in a vinyl liner pool use a 3M black scrubber pad. Having done this, super shock raising Free Available Chlorine to 5 to 10 ppm add a good copper or silver based algaecide, make sure the product is chelated which will prevent staining and follow the instructions to the letter. These are products that more is not better.
Do you read a miniscus from top to bottom or bottom to top?
bottom
How can you remove the brown stains on the bottom of a gunnite pool from chlorine tablets?
Some pool stores sell a tool just for small stains. It may have to be ordered. I think it is made by Pool Tool in Ventura, Calif. It uses a small amount of acid in a cup like device which is placed over the stain. Caution: leaving the device on a spot too long will etch the plaster and it will be worse than when you started. Tablets are not thrown into the pool to maintain chlorine levels. Use a feeder. Also do not put tabs in the skimmer. k
Would it be better if the chlorine dispenser sat at the bottom of the pool?
It probably would make it worse. Chlorine is heavier than water, so when the dispenser releases chlorine, it would sit at the bottom, rather than drift down.
Why has Burnout 35 left black stains on the bottom of a plaster pool and how can you remove them?
This must be an algaecide of some sort possible a low grade of chlorine. Did you follow the instructions EXACTLY? Is this product supposed to settle on algae spots? If not , did you brush it to keep it from clumping and settling on the bottom of the pool? The black stains, possible caused by the product burning the plaster where it settled --- improper use of product. Impossible to know without seeing the stains and finding out just how you used the product. Contact Bioguard for further info.
Do you brush the pool bottom before or after you put the chlorine in to shock it?
I am pretty sure you should brush the bottom before you put in the chlorine, but you should check with another source because I am not positive.
If you take tablets and then are sick will the tablets take effect?
Yes, you almost never vomit everything in your stomach, but only the very uppermost liquids. Tablets usually sink to the bottom and are dissolved properly.
What is the correct type of chlorine to add to a color bottom or 3-m coated pool. I was told that trichlor 3 inch tablets in a floater were not acceptable for color botom pools Is this correct?
Well, for one thing, the floater can get hung up on the top step and cause what looks like a rust mark. It also etches the plaster in those areas making the plaster very rough. It can also bleach out the color and any small pieces that are left, as the large tab dissolves, can fall out of the floater slots. There is no "correct" type of chlorine - you just have to be careful in their use. Granular chlor. , which is broadcast over the water, can, if it gets damp, clump up and those clumps will go directly to the bottom of the pool - sitting there until they disappear. So, that leaves 12.5% liquid chlorine. I would avoid other chlorines that are on the market unless they are recommended in your area. ( Calcium chloride, cal-hypo, lithium --- these are low grade chlorine compounds). One way to introduce large or "J" tabs to the pool water is to add an in line tab feeder to the system being careful to install it as per manufacturer's instructions. If you have copper plumbing DO NOT INSTALL THIS DEVICE. Probably the best, at the present time, would be to install a salt system. k
Is it true recommended location of a chlorine room exhaust fan is at floor?
Probably because chlorine is heavier than air and it sinks to the bottom.
Can you add chlorine straight in to a pool without a chlorine dispenser?
Sure you can use liquid chlorine and walk around the pool. You can use granular chlorine directly into the pool. If it doesn't disolve before it gets to the bottom you should brush it around so it won't stain. Never add pucks/tabs directly to the pool OR THE SKIMMER. (BAD FOR THE EQUIPMENT) They will sink to the bottom and stain.
How do you make a model pyramid out of plaster of Paris?
To build a model pyramid out of plaster of Paris, coat the inside of an ice cube tray with petroleum jelly. Pour plaster of Paris inside and allow to dry. Once dry, place the blocks in a square pattern, gluing them together with plaster of Paris. Stack another row atop the bottom row, insetting each row to form a pyramid shape.
Where did Moses break the two Stone Tablets?
At the bottom of Mount Sinai (Exodus 32:19).
Why is it important to understand the chemical composition of chlorinating agents used swimming pools before using them?
Because each different type of chlorine will effect your pH differently. Each type of chlorine also leaves behind different ingredient residuals. For example.. Liquid chlorine leaves behind some salt, tablets leave behind chlorine stabilizer, some shock bags leave behind calcium and other shock bags leave behind chlorine stabilizer. There are many other types... Also, do not ever mix them together. The results could be chemically life threatening and explosive. Bottom line....read the label and really know what you are buying. Aquaticpoolsystems.com
Why is it important to understand the chemical composition of chlorinating agents used in swimming pools before using them?
Because each different type of chlorine will effect your pH differently. Each type of chlorine also leaves behind different ingredient residuals. For example.. Liquid chlorine leaves behind some salt, tablets leave behind chlorine stabilizer, some shock bags leave behind calcium and other shock bags leave behind chlorine stabilizer. There are many other types... Also, do not ever mix them together. The results could be chemically life threatening and explosive. Bottom line....read the label and really know what you are buying. Aquaticpoolsystems.com
